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Background: Smartphone users have increased worldwide, due to their multifunctionality and accessibility. Objective: To determine the mediating effect of negative emotions between life satisfaction and smartphone addiction in college students. Method: A structural equation explanatory model was proposed in which each negative emotion (depression, anxiety, and stress) has a mediating role between life satisfaction and cell phone addiction. To this end, 1109 university students from Metropolitan Lima were selected and administered the DASS 21, SABAS, SWLS. Result: A partial effect of each mediating model was found, in addition to Satisfaction with life achieved a direct effect on cell phone addiction; at the same time the mediating variables achieved a significant direct effect on addictive behavior. Conclusion: Negative emotions have a mediating role in explaining smartphone addiction.
Introducción: Los usuarios de teléfonos inteligentes se han incrementado a nivel mundial, debido a su multifuncionalidad y accesibilidad. Objetivo: Determinar el efecto mediador de las emociones negativas entre la satisfacción con la vida y la adicción a los teléfonos inteligentes en universitarios. Método: Se planteó un modelo explicativo de ecuaciones estructurales en el cual cada emoción negativa (depresión, ansiedad y estrés) tienen un rol mediador entre la satisfacción con la vida y la adicción a los celulares. Con tal fin, se seleccionaron 1109 universitarios de Lima Metropolitana a los cuales se les aplicaron el DASS 21, SABAS, SWLS. Resultados: Se encontró un efecto parcial de cada modelo mediador, además la Satisfacción con la vida logró un efecto directo sobre la adicción a los teléfonos celulares; al mismo tiempo las variables mediadoras consiguieron un efecto directo significativo sobre la conducta adictiva. Conclusión: las emociones negativas tienen un rol mediador en la explicación de la adicción a los teléfonos inteligentes.
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Objective:To explore the relationship between kinesiophobia and somnipathy among inpatients with lumbar degenerative disease after surgery, and analyze the mediating effects of post-traumatic stress disorder and family care.Methods:A cross-sectional survey method was adopted, from July 2020 to July 2022, a total of 130 lumbar degenerative disease patients from Wuhan Dongxihu District People′s Hospital were enrolled as research object by convenience sampling method. General information questionnaire, Tampa Scale for Kinesiophobia, Pittsburgh Sleep Quality Index, Posttraumatic Stress Checklist-civilian version and Family APGAR index were used for investigation. A structural equation model was established to evaluate the mediating effect of post-traumatic stress disorder, family care on kinesiophobia and somnipathy.Results:The scores of kinesiophobia, somnipathy, post-traumatic stress disorder and family care were (39.95 ± 3.90), (7.63 ± 0.46), (25.99 ± 4.99), (5.67 ± 1.76) points, respectively. There were significant differences in the scores of somnipathy in terms of age, monthly income, course of disease and pain degree ( F values were 3.21 to 10.12, all P<0.05). The dimensions and total scores of somnipathy were positively correlated with kinesiophobia ( r values were 0.347 to 0.800, all P<0.05) and post-traumatic stress disorder ( r values were 0.385 to 0.825, all P<0.05), negatively correlated with the scores of family care ( r values were - 0.653 to - 0.282, all P<0.05); the scores of family care was negatively correlated with kinesiophobia and post-traumatic stress disorder ( r = - 0.695, - 0.637, both P<0.05); the scores of kinesiophobia was positively correlated with post-traumatic stress disorder ( r = 0.773, P<0.05). The indirect effect of kinesiophobia on somnipathy was identified, and the total indirect effect value was 0.44; the indirect effect value of family care and post-traumatic stress disorder was 0.09, which accounted for 12.0% of the total effect. Conclusions:Post-traumatic stress disorder and family care play a multiple mediating role on the relationship between kinesiophobia and somnipathy in patients with lumbar degenerative disease after surgery.
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Objective:To explore the mediating effects of disease perception on disease uncertainty and health behaviors among thrombolysis therapy in patients with acute ischemic stroke, to provide a theoretical basis for improving patient health behavior.Methods:By cross-sectional survey methods, from June 2021 to June 2022, a total of 123 thrombolysis therapy in patients with acute ischemic stroke were investigated by general information, Mishel Uncertainty in Illness Scale, Health Behavior Scale for Stroke Patients and Revised Illness Perception Questionnaire by convenience sampling method. The mediating effect of disease perception between disease uncertainty and health behavior was verified by structural equation model.Results:The scores of disease uncertainty, health behaviors and disease perception were (52.21 ± 7.67), (63.77 ± 9.40), (127.70 ± 26.19) points in patients with acute ischemic stroke. Health behaviors and each dimension including exercise, medication, instruction, nutrition, responsibility, tobacco and alcohol were negatively correlation between disease uncertainty ( r values were -0.762 to -0.411, all P<0.01), and positively correlation between disease perception ( r values were 0.689 to 0.912, all P<0.01). Disease uncertainty was a significantly negative predictor for health behaviors ( β= -0.71, P<0.01); disease perception was also a significantly negative predictor for disease perception ( β = -0.85, P<0.01). Disease uncertainty had a significantly indirect effect on the health behaviors for thrombolysis therapy in patients with acute ischemic stroke through disease perception, which showed the mediating effect of health behaviors accounts for 15.2% of total effect. Conclusions:Disease perception play a mediating role in the relationship between disease uncertainty and health behaviors among thrombolysis therapy in patients with acute ischemic stroke.
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Objective:To explore the mediating effect of self-advocacy between posttraumatic growth and social isolation among female breast cancer survivors, so as to provide reference for the establishing nursing intervention strategies for social isolation.Methods:A random samplingsurvey was conducted, a total of 220 female breast cancer survivors from May to December 2021in Tianjin Cancer Hospital Airport Hospital were recruited by convenience sampling method. They were investigated by the general information questionnaire, General Alienation Scale, Posttraumatic Growth Inventory and Female Self-advocacy in Cancer Survivorship, respectively.Results:A total of 203 valid questionnaires were collected. The score of posttraumatic growth was (60.91 ± 12.04) points, self-advocacy was (59.56 ± 12.19) points, social isolation was (36.52 ± 7.79) points of female breast cancer survivors. The Posttraumatic Growth Inventory scores of each dimension in female breast cancer survivors were positively correlated with the scores of female self-advocacy of each dimension in cancer survivorship ( r values were 0.219-0.686, all P<0.01); each dimension of the General Alienation Scale scores were negatively correlated with the scores of Posttraumatic Growth Inventory and Female Self-advocacy in Breast Cancer Survivorship ( r values were -0.804 to -0.202, all P<0.01). The posttraumatic growth of female breast cancer survivors affected social alienation through self-advocacy, which showed the mediating effect of self-advocacy accounts for 32.8% of total effect. Conclusions:Self-advocacy plays a mediating role in the relationship between posttraumatic growth and social isolation. Nurses can improve the level of self-advocacy of female breast cancer survivors and promote posttraumatic growth, so as to decrease social isolation.
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Objective:To investigate the mediating effect of rumination in primiparae on the expectation gap of social support and postpartum depression, so as to provide a reference basis for early detection and intervention in the regulation of meternal postpartum depression.Methods:In this cross-sectional study, questionnaires were administered from November 2021 to March 2022 using the general information questionnaire, the Ruminant Thinking Response Scale, the Postpartum Social Support Scale, and the Edinburgh Postpartum Depression Scale to 266 primiparae at three tertiary level A hospitals, the First Affiliated Hospital of Xi′an Jiaotong University, the Second Affiliated Hospital of Xi′an Jiaotong University, and the Northwest Women′s and Children′s Hospital, for postpartum review, and the relationship between ruminant thinking, social support expectation gap, and postpartum depression was analyzed using correlation analysis, structural equation modeling, and application of Bootsrap method.Results:The social support expectation gap, ruminative thinking, and postpartum depression average scores were (16.74 ± 12.77), (39.43 ± 4.14), (6.77 ± 2.77) points, respectively.There were positive correlations between social support expectation gap and ruminative thinking, postpartum depression, and ruminative thinking and postpartum depression ( r=0.62, 0.75, 0.70, all P<0.01). Primiparae ruminative thinking partially mediated the relationship between social support expectation gap and postpartum depression, with the mediating effect accounting for 22% of the total effect. Conclusions:Social support expectation gap can directly affect the occurrence of postpartum depression, but also indirectly through ruminative thinking, and postpartum depression can be prevented and intervened from the perspective of reducing ruminative thinking in clinical practice.
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Objective:To explore the mediating effect of attentional bias of negative information between fatalism and death anxiety in lung neoplasms patients.Methods:This study was a cross-sectional study. It was convenient to select 312 lung neoplasms patients treated in the Department of Oncology, First Affiliated Hospital and Second Affiliated Hospital of Air Force Military Medical University the Chinese People′s Liberation Army, from April 2021 to April 2022 as the research subjects. Questionnaires were conducted with Fatalism Scale, Attention to Negative Information Scale, and Templer′s Death Anxiety Scale. Structural equation model were constructed based on self-regulatory executive function models.Results:The total score of fatalism, attentional bias of negative information, and death anxiety of 312 lung neoplasms patients were (61.68 ± 11.92) points, (39.57 ± 5.19) points, and (61.23 ± 9.30) points, respectively. Attentional bias of negative information was significantly positively correlated with fatalism ( r = 0.594, P<0.01). Death anxiety was significantly positively correlated with fatalism and attentional bias of negative information ( r = 0.494, 0.558, both P<0.01). Attentional bias of negative information played a partial mediating role between fatalism and death anxiety, and the mediating effect accounted for 37.7% of the total effect. The value of each fitness index of the mediation effect model was within the acceptable range. Conclusions:Attentional bias of negative information is an intermediary variable between fatalism and death anxiety of lung neoplasms patients. Nursing staff should pay attention to the level of attentional bias of negative information of lung neoplasms patients and carry out targeted nursing interventions from the emotional processing process to reduce the level of death anxiety in patients with lung neoplasms.
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Objective:To explore the mediating effect of expectations regarding aging between social support and frailty in elderly patients with chronic obstructive pulmonary disease (COPD), so as to promote better health education among medical staff and improve patients′ ability to cope with frailty.Methods:This was a cross-sectional study, the convenience sampling method was used to select 258 elderly COPD patients hospitalized in the Department of Respiratory Medicine and Geriatrics of Xinjiang Uygur Autonomous Region People′s Hospital from November 2021 to April 2022. They were investigated by the general information questionnaire, Fried Scale, Social Support Scale and Expectations Regarding Aging-21. Analyzed the correlation among social support, expectations regarding aging and frailty. AMOS 26.0 was used to investigate the mediating effect of expectations regarding aging between social support and frailty in elderly COPD patients.Results:The score of social support, expectations regarding aging and frailty in elderly patients with COPD was (30.45 ± 5.57), (35.25 ± 6.28) and (2.34 ± 1.71)points, respectively. There was negative correlation between social support and frailty in elderly COPD patients ( r=-0.541, P<0.01), while positive correlation between social support and expectations regarding aging ( r=0.477, P<0.01). The negative correlation between social support and expectations regarding aging ( r=-0.536, P<0.01). Expectations regarding aging played a partial mediating role between social support and frailty, with mediating effect value of -0.229, accounting for 35.39% of the total effect. Conclusions:Expectations regarding aging is a mediator variable between social support and frailty in elderly COPD patients. Health care providers can alleviate or even reverse patients' debilitating condition by improving their expectations regarding aging and social support.
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Objective:To explore the relationship between psychological distress and intimacy in stroke patients and the mediating effect of different dyadic coping style, to provide theoretical guidance for improving the intimate relationship of stroke patients.Methods:A convenient sampling method was used to select 203 patients with stroke who visited the General Hospital of Ningxia Medical University, the People's Hospital of Ningxia Hui Autonomous Region and the Department of Neurology of Yinchuan First People's Hospital from December 2020 to July 2021 as the survey objects. The general information questionnaire, Kessler Psychological Distress Scale, Quality of Relationship Index and Dyadic Coping Inventory were used to investigate patients.Results:The scores of psychological distress, intimate relationship, positive dyadic coping and negative dyadic coping were 19.33 ± 7.46, 32.75 ± 6.79, 86.25 ± 13.22, and 16.46 ± 4.08, respectively. Correlation analysis showed that psychological distress was negatively correlated with intimate relationship and positive dyadic coping ( r=-0.195, -0.204, both P<0.01), psychological distress was positively correlated with negative dyadic coping ( r=0.229, P<0.01). The mediating effect of positive dyadic coping and negative dyadic coping on psychological distress and intimate relationship was 35.87% and 53.26%, respectively. Conclusions:The psychological distress indirectly affects the intimate relationship of stroke patients through positive dyadic coping and negative dyadic coping. Health care workers can guide patients to actively cope with the disease and encourage couples to strengthen communication, so as to enhance the intimacy of couples and promote their physical and mental health development.
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Objective:To investigate the mechanism of depression between social capital and cognitive function of the elderly in nursing institutions, and provide new ideas for improving the cognitive function of the elderly.Methods:This study was a cross-sectional survey. Using the convenient sampling method to collect the general information questionnaire, the Geriatric Depression Scale (GDS), Social Capital Scale and Montreal Cognitive Assessment Scale (MoCA) of 218 elderly people from three elderly nursing institutions including Shenyang Health Care Centre, Songpu Nursing Home and Colourful Sunshine City Pension Service Centre in Shenyang from July 2020 to January 2021.Results:A total of 218 questionnaires were distributed and 202 valid questionnaires were recovered. The effective recovery rate was 92.7%. The scores of the cognitive function, depression and social capital of the elderly were (23.60 ± 4.25), (6.38 ± 4.35) and (75.41 ± 8.61). Depression scores were negatively correlated with social capital scores and cognitive function scores ( r = - 0.401, - 0.481, both P<0.05); there was a positive correlation between social capital scores with cognitive function scores ( r = 0.338, P<0.05). There was a mediating effect of depression between social capital and cognitive function, accounting for 42.1%. Conclusions:While improving the cognitive function of the elderly in nursing institutions by improving the level of social capital, it is necessary to pay attention to the mediatingeffect of depression, strengthen the psychological counseling of the elderly, promote mental health, and further reduce the occurrence and development of cognitive decline in the elderly.
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Objective:To explore the mediating effect of self-regulation fatigue between acceptance of hearing impairment and work withdrawal behavior in young and middle-aged patients with sudden deafness, so as to provide reference for the formulation of intervention measures for job withdrawal behavior.Methods:A cross-sectional survey was conducted to facilitate the selection of 326 young and middle-aged patients with sudden deafness who were treated in the Department of Otolaryngology, Head and Neck Surgery in the First Affiliated Hospital and the Second Affiliated Hospital of Air Force Military Medical University of the Chinese PLA from February 2021 to January 2022. The survey was carried out by general information questionnaire, the Revised Acceptance Disability Scale, the Self-Regulatory Fatigue Scale, and the Work Withdrawal Behavior Scale. Structural equation model method was used to analyze the mediating effect.Results:The acceptance of hearing impairment score in young and middle-aged patients with sudden deafness was (59.82 ± 10.99) points, the self-regulation fatigue score was (60.38 ± 8.84) points, and the work withdrawal behavior score was (39.06 ± 6.51) points. Self-regulation fatigue was negatively correlated with acceptance of hearing impairment ( r=-0.541, P<0.01). Work withdrawal behavior was negatively correlated with acceptance of hearing impairment ( r=-0.488, P<0.01), and was positively correlated with self-regulation fatigue ( r=0.587, P<0.01). Self-regulation fatigue played a partial mediating effect between the acceptance of hearing impairment and work withdrawal in young and middle-aged patients with sudden deafness, and the mediating effect ratio was 56.30%. Conclusions:The acceptance of hearing impairment can not only directly affect the work withdrawal behavior of young and middle-aged patients with sudden deafness, but also indirectly affect their work withdrawal behavior through self-regulation fatigue. Medical staff should pay attention to the internal relationship between the acceptance of hearing impairment, self-regulation fatigue and work withdrawal behaviors, so as to improve the acceptance of hearing impairment of patients, relieve their self-regulation fatigue, and avoid the occurrence of work withdrawal behaviors.
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ObjectiveTo explore the mediating effect of rumination on the relationship between insomnia and suicidal ideation in adolescents with depressive disorder， so as to provide guidance for the preventions of suicidal ideation. MethodsA total of 302 adolescents with major depressive disorder in Department of Psychosomatic Medicine of Deyang People's Hospital from January to December 2020 and met the Diagnostic and Statistical Manual of Mental Disorders， fifth edition （DSM-5） clinical significance criterion for depressive disorder were enrolled. All individuals were assessed using Insomnia Severity Index （ISI）， Ruminative Response Scale （RRS） and Positive and Negative Suicide Ideation （PANSI）. Then the mediating effect of rumination in the relation between insomnia and suicidal ideation in adolescents with major depression disorder was analyzed using Process v3.2 model 4， and testified with the bias-corrected non-parametric percentile Bootstrap method. ResultsISI scores in adolescents with major depression disorder were positively correlated with PANSI score （r=0.400， P<0.01）， and were positively correlated with RRS total score， obsessive thinking and introspection factor score （r=0.378， 0.360， 0.333， P<0.01）. RRS score was also positively correlated with PANSI score （r=0.292， P<0.01）. Rumination exerted a partial mediating effect on the relationship between insomnia and suicidal ideation （β=0.174， 95% CI： 0.098~0.261）. ConclusionThe relationship between insomnia and suicidal ideation in adolescents with depressive disorder is partially mediated by rumination， additionally， insomnia can affect suicidal ideation in adolescents with depressive disorder both directly and indirectly through rumination.
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Objective: To explore the current situation of anxiety, subjective well-being in occupational population and the mediating effect of resilience. Methods: From March 24th to 26th, 2020, a cross-sectional survey was conducted among occupational population aged ≥18 years old using online questionnaires. A total of 2134 valid questionnaires were obtained, with respondents from 30 provinces, autonomous regions, and municipalities directly under the Central Government. Their general demographic data, subjective well-being, anxiety, and resilience were collected. Pearson χ(2) test and Spearson correlation analysis were used for data analysis, and structural equation model was used to explore the mediating effect of resilience on anxiety and subjective well-being. Results: The age of the respondents ranged from 18 to 60 years old, with an average age of (31.19±7.09) years old, including 1075 (50.4%) women and 1059 (49.6%) men. The positive rates of low subjective well-being and anxiety were 46.5% (992/2134) and 28.4% (607/2134), respectively. Anxiety scores were significantly negatively correlated with subjective well-being scores and resilience scores (r(s)=-0.52, -0.41, P<0.05), while resilience was significantly positively correlated with subjective well-being (r(s)=0.32, P<0.05). Structural equation models showed that anxiety had a negative predictive effect on subjective well-being, while resilience not only had a positive predictive effect on subjective well-being, but also played a mediating role between anxiety and subjective well-being, with a mediating effect of 9.9%. Conclusion: The situation of anxiety and well-being in the occupational population is still not optimistic, and resilience has a mediating effect between anxiety and subjective well-being.
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Male , Humans , Female , Adolescent , Adult , Young Adult , Middle Aged , Cross-Sectional Studies , Resilience, Psychological , Anxiety/epidemiology , Stress, Psychological , Surveys and QuestionnairesABSTRACT
Background Front-line power grid workers are required to face a variety of occupational hazards (such as aerial work), which make them susceptible to psychological problems and further reduce their performance efficiency and safety level. Objective To investigate the mental health status of front-line power grid workers and explore the influence of personality traits on mental health and the potential mediating role of work-family support between them. Methods This study was designed as a cross-sectional study. From January to June 2019, a cluster random sampling method was used to select two of the 20 power supply stations owned by a Guangdong power company. A total of 485 front-line power grid workers were included in the study. Sociodemographic characteristics were investigated, and NEO Five-Factor Inventory, Work-Family Support Scale, and Symptom Checklist 90 (SCL-90) were used in the survey. Spearman correlation analysis was conducted to analyze the correlations between measured variables. Structural equation modeling was used to analyze the relationships of personality traits, work-family support, and mental health, and Bootstrap analysis was used to test the mediating effect of work-family support on the relationship of personality traits and mental health. Results The M (P25, P75) of total SCL-90 score was 134.00 (110.00, 167.00）, and 139 (28.66%) front-line power grid workers showed positive mental health symptoms. The correlation analysis indicated that among the front-line power grid workers, neuroticism score was negatively correlated with work-family support total score (rs=−0.356, P<0.001), and positively correlated with the total score of SCL-90 (rs=0.557, P<0.001) as well as all the scores of its sub-dimensions (rs=0.436-0.550, P<0.001). Openness score was positively correlated with work-family support total score (rs=0.269, P<0.001), and except for paranoid ideation (P>0.05), openness score was negatively correlated with the scores of all the other sub-dimensions of SCL-90 (rs=−0.091-−0.147, P<0.05). The scores of the other three personality traits (extroversion, agreeableness, and conscientiousness) were positively correlated with work-family support total score (rs=0.331-0.466, P<0.001), and negatively correlated with the total score of SCL-90 as well as the scores of all its sub-dimensions (P<0.001). The modified structural equation modeling indicated that the direct effect of work-family support on mental health symptoms was −0.225 (P<0.001). The direct effects of extraversion and openness on work-family support were 0.241 (P<0.001) and 0.123 (P<0.05), respectively, while the effect on mental health symptoms was not statistically significant. The direct effects of neuroticism on work-family support and mental health symptoms were -0.152 (P<0.01) and 0.467 (P<0.001), respectively. The direct effects of conscientiousness on work-family support and mental health symptoms were not statistically significant (P>0.05). The direct effect of agreeableness on work-family support was not statistically significant (P>0.05), while the direct effect on mental health symptoms was −0.180 (P<0.001). Conclusion The front-line power grid workers show a high score of SCL-90. Workers with higher neuroticism are more vulnerable to mental health symptoms. Work-family support fully mediates the effects of extraversion and openness on mental health symptoms, and partially mediates the effects of neuroticism on mental health symptoms, while does not mediate the effects of agreeableness on mental health symptoms. Sufficient work-family support may improve mental health status.
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Background Occupational aluminum exposure may associate with cognitive impairment in workers. At present, brain functional imaging data are not available for evaluating cognitive dysfunction in workers with occupational exposure to aluminum. The role of brain functional connectivity in cognitive decline associated with occupational aluminum exposure is not clear yet. Objective To explore potential mediating effect of brain functional connectivity value on cognitive decline induced by occupational aluminum exposure, to assess the relationship between cognitive impairment and brain functional connectivity, and to identify appropriate imaging evidence of early cognitive changes induced by occupational aluminum exposure. Methods This study used a subset data from a previous cross-sectional survey. Based on the data of aluminum-exposed workers, over 40 years old, aluminum-exposed working years >1 year, Montreal International Cognitive Assessment (MoCA) (Beijing version) score <26 points, 20 workers were selected as the case group, and 40 healthy workers with the same basic conditions (age, smoking, drinking, etc.) in non-aluminum production were selected as the control group with a 1∶2 matching ratio. The basic information of the subjects was collected, plasma aluminum level and cognitive function level were evaluated, and different brain functional connectivity values of default mode network (DMN) were measured by magnetic resonance imaging. The mediating effect analysis was conducted to examine the role of brain functional connectivity in the relationship between aluminum exposure and cognitive function. Results The plasma aluminum concentration of the case group was 1.76 times higher than that of the control group [(33.04±12.02) µg·L−1 vs (18.74±8.95) µg·L−1, P<0.05]; the MoCA score was 9.5 points lower [(18.35±2.64) vs (27.85±0.92), P<0.05]. The mean functional connection values of DMN1 and DMN2 in the case group were lower than those in the control group (P<0.05). The mean functional connection values of the left precuneus, left middle cingulate cortex, left superior medial gyrus, left precentral gyrus, and left cerebellum also decreased in the case group compared with the control group (P<0.05). Plasma aluminum concentration was negatively correlated with DMN1 functional connectivity value and MoCA scores (b=−0.004, 95%CI: −0.008–−0.001; b=−0.15, 95%CI: −0.233–−0.067; P<0.05). The mean functional connection values of DMN1 and DMN2 were positively correlated with MoCA scores (b=10.945, 95%CI: 5.574–16.316; b=10.107, 95%CI: 2.457–17.758; P<0.05). With the increase of plasma aluminum concentration, MoCA score decreased, but when the plasma aluminum concentration exceeded 19.50 µg·L−1, MoCA score decreased slowly. With the increase of the mean functional connectivity value of DMN1, MoCA score increased, but when the mean functional connectivity value of DMN1 exceeded 1.05 and continued to increase, the increase of MoCA score slowed down. The results of mediating effect analysis showed that the functional connectivity value of DMN1 partially mediated the relationship between plasma aluminum concentration and MoCA score, and the mediating effect was 25.80%. Conclusion Cognitive impairment in occupational aluminum-exposed workers is closely related to brain resting-state functional connectivity. There is a dose-response relationship of plasma aluminum concentration with DMN1 functional connectivity value and MoCA scores, and DMN1 functional connectivity value partially mediates the relationship between plasma aluminum concentration and MoCA scores. The brain functional connectivity value can be used as meaningful imaging data to study the cognitive decline induced by chronic aluminum exposure.
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Background As a group of environmental pollutants, polycyclic aromatic hydrocarbons (PAHs) are neurotoxic and may cause mild cognitive impairment (MCI) by inducing inflammation. Whether neutrophil-lymphocyte ratio (NLR), an inflammatory indicator, plays a mediating role in the relationship between PAHs exposure and MCI is unclear yet. Objective To investigate a potential mediating role of NLR in the association between exposure to PAHs and MCI in coke oven plant workers. Methods Eleven urine hydroxylated PAHs (OH-PAHs) of 530 coke oven plant workers were determined by high performance liquid chromatography tandem mass spectrometry. NLR was derived from participants' routine blood examination results using a fully automated haematology analyser. The associations between urinary OH-PAHs and MCI were analyzed by binary logistic regression, the associations between urinary OH-PAHs and NLR were analyzed by multiple linear regression, and the role of NLR in the relationship between urinary OH-PAHs and MCI was evaluated by mediating effect analysis. Results After controlling for confounding factors and other OH-PAHs, the results of binary logistic regression showed that for every e-fold (e is the base of the natural logarithm) increase in the concentration of 2-hydroxynaphthalene (2-OHNap) and 1-hydroxyphenanthrene (1-OHPhe), the OR (95%CI) values of reporting MCI positive were 1.21 (1.02, 1.43) and 1.25 (1.04, 1.51) respectively. For each unit increase of NLR, the OR (95%CI) of reporting MCI positive was 1.56 (1.12, 2.18). The results of multiple linear regression showed that each unit increase in natural log-transformed levels of 1-OHPhe was associated with 0.05 (95%CI: 0.01, 0.10) increase of NLR. The results of mediating effect analysis showed that the association between urinary 1-OHPhe and MCI was partially mediated by peripheral blood NLR, with a mediation ratio of 9.8%. Conclusion Exposure to PAHs in coke oven plant workers may increase the risk of reporting MCI positive partially through increased NLR in peripheral blood.
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Background The correlation between noise exposure and negative emotions of noise-exposed workers has received increasing attention and related studies have been reported. However, there is a lack of research on the path and effect analysis of the relationship between noise exposure and negative emotions, which will contribute to a more comprehensive understanding of the health damage characteristics of noise in addition to hearing loss. Objective To explore the path and effects of cumulative noise exposure, tested hearing thresholds, and conscious hearing level of noise-exposed workers on negative emotions. Methods Using stratified random sampling, 312 noise-exposed workers from a machinery and equipment manufacturing enterprise were selected. Occupational history, negative emotions (including the feelings of stress, anxiety, and depression), and conscious hearing level of the workers were investigated using the Depression-Anxiety-Stress Scale (DASS-21) and a self-made questionnaire. The hearing threshold of the workers was measured by pure tone air conduction audiometry. Sound level meter was used to measure noise equivalent sound level at selected work sites. Individual cumulative noise exposure was estimated based on work site noise level and personal noise exposure history. Path analysis was used to analyze potential mediating effects of workers' hearing thresholds and conscious hearing levels on the relationship between noise exposure and negative emotions (including stress, anxiety, and depression). Results The positive rates of negative emotions among the 312 noise-exposed workers were 18.27% (57/312) for stress, 46.79% (146/312) for anxiety, and 28.53% (89/312) for depression; the cumulative noise exposure ranged from 101.0 to 136.1 dB(A)·d, with an average of 125.69 dB(A)·d. The distributions of tested hearing thresholds and conscious hearing levels among the workers exposed to noise were significantly inconsistent (P<0.001), with both unweighted and weighted Kappa values less than 0.4. The percentage of workers with conscious hearing levels higher than their hearing threshold levels was 16.0%, and the percentage of workers with conscious hearing levels lower than conscious hearing levels was 38.7%. The path analysis results showed that tested hearing thresholds had no mediating effect on the relationship between cumulative noise exposure and negative emotions. There was a partial mediating effect of conscious hearing level on the relationship between cumulative noise exposure and negative emotions, with a mediating effect value of 0.06 (95%CI: 0.03, 0.11) and a mediating effect ratio of 28.57%. Conclusion Conscious hearing plays a partial mediating role in the relationship between cumulative noise exposure and negative emotions of noise-exposed workers, while tested hearing thresholds do not.
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【Objective】 To investigate the intrinsic relationship of social support and psychological capital with college students’ volunteer motivation in the post-epidemic era so as to provide theoretical basis for formulating policies and measures to increase college students’ participation in volunteer activities. 【Methods】 In March 2022, 1 120 college students from 15 universities in Henan Province were selected by convenient sampling method. Their general information, social support, psychological capital, and volunteer motivation were investigated, and univariate analysis, correlation analysis and intermediary effect analysis were performed. 【Results】 The differences of scores in six dimensions of volunteer motivation (i.e., values, understanding, enhancement, career, social interaction, and self-protection) were statistically significant (F=124.90, P<0.001). There were significant differences in social support level of college students of different genders (t=-2.40, P<0.05), and the difference in volunteer motivation level among different grades of college students was statistically significant (F=6.72, P<0.001). Social support, psychological capital, and volunteer motivation were positively correlated with one another (r=0.41, r=0.35, r=0.50, P<0.001). Part of the intermediary effect of psychological capital between social support and volunteer motivation was significant (intermediary effect value=0.49, 95% CI: 0.39-0.59). 【Conclusion】 Colleges and universities can take corresponding measures to improve college students’ volunteer motivation level by improving social support and psychological capital level.
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【Objective】 To explore the relationship of graduate students’ psychological stress and perceived stress with their mental health, and analyze the mediating effect of perceived stress. 【Methods】 We investigated 705 graduate students by Chinese College Student Mental Health Scale (CCSMHS), Chinese College Student Psychological Stress Scale (CCSPSS), and Perceived Stress Scale-10 (PSS). Correlation and structural equation model analysis was made. 【Results】 The graduate students’ psychological stress and perceived stress had significant correlation with their mental health. SEM analysis showed that perceived stress served as a partial mediation variable between psychological stress and mental health. Psychological stress had direct effects (0.216) for mental health and indirect effects (0.126) through perceived stress. 【Conclusion】 Graduate students’ psychological stress can influence their mental health directly, and can also reduce mental health level by increasing perceived stress. Perceived stress has partial mediating effect between psychological stress and mental health.
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Objective To explore the current status of emotional exhaustion among clinical nurses and its relationship with work stress, thought suppression, difficulties in emotion regulation. Methods A totally of 1 159 clinical nurses from 10 cities in Henan Province and Fujian Province were enrolled as the research subjects using grabbing random balls method. And their status of work stress, thought suppression, difficulties in emotion regulation and emotional exhaustion were investigated by Depression-Anxiety-Stress Scale, White Bear Suppression Inventory, Brief Version of the Difficulties in Emotion Regulation Scale and Emotional Exhaustion Scale. Results The scores for work stress, thought suppression, difficulties in emotion regulation, emotional exhaustion were (23.5±3.8), (47.4±6.5), (54.1±7.2), (11.7±4.2), respectively. Among them, 40.0% of nurses experienced emotional exhaustion. Bootstrap analysis results showed that work stress positively affected emotional exhaustion among clinical nurses [standardized partial regression coefficient (β)=0.42, 95% confidence intervals (CI)： 0.36-0.44］. Work stress affected emotional exhaustion through thought suppression (β=0.16, 95%CI： 0.14-0.20), difficulties in emotion regulation (β=0.16, 95%CI： 0.14-0.19), and the chain mediating role of thought suppression and difficulties in emotion regulation (β=0.07, 95%CI： 0.04-0.09). Conclusion Emotional exhaustion symptoms are prevalent among clinical nurses. Work stress directly and indirectly influences thought suppression, difficulties in emotion regulation and emotional exhaustion of nurses.
ABSTRACT
Objective: To investigate the mechanisms of work-family conflict (WFC) and work-family enrichment (WFE) between job demands and subjective well-being (SWB) among nurses. Methods: A total of 1 420 nurses were selected as the study subjects from five tertiary public hospitals in Shandong Province using two-stage sampling method. Job Demands-Resources Scale, Work-Family Relationship Scale and General Well-Being Scale were used for investigating the job demands, job resources, WFC, WFE, and SWB. Results: The average score of SWB in nurses was (75.5±15.1). Job demands had a negative effect on SWB in nurses (standardized regression coefficient=-0.17, P<0.01). WFC and WFE played parallel mediating roles in the relationship between job demands and SWB, with the mediating effect values of -0.29 and -0.07, respectively (both P<0.01). The interaction of job resources and job demands positively affected WFC (standardized regression coefficient<0.01, P<0.01). Conclusion: Job demands affect SWB through the mediating roles of WFC and WFE, and the impact of job demands on WFC is moderated by job resources. The effect of job demands on WFC is relatively strong in nurses with high levels of job resources, but the difference in the effect of high and low levels of job resources is small.