Research progress on the relation and related mechanism of night shift work and cardiovascular disease / 中华劳动卫生职业病杂志

Cardiovascular disease is a class of diseases involving the heart or blood vessels, which accounts for about one-third of all deaths worldwide each year. Unhealthy diet, lack of physical activity, smoking and excessive alcohol consumption are all risk factors for cardiovascular disease. With the increasing number of night shift workers, the number of patients with cardiovascular disease has increased, and night shift work has gradually become a risk factor of cardiovascular disease. At present, the mechanism of cardiovascular disease caused by night shift work is still unclear. This review summarizes the relationship between night shift work and cardiovascular disease and its related biochemical indicators, and discusses the research on related mechanisms.

Epidemiological research progress on effects of night shift work on female reproductive health / 环境与职业医学

The International Agency for Research on Cancer (IARC) defines shift work as any arrangement of daily working hours other than the standard daylight hours (typically 7:00/8:00 am–5:00/6:00 pm). To meet the needs of rapid socioeconomic development, shift work is becoming more and more common. The impact of shift work, especially night shift work, on human health cannot be ignored. Female's health is not only important to the well-being of themselves, but also has a far-reaching impact on their children and even their entire family. Increasing epidemiological studies have focused on the effects of night shift work on female's reproductive health. This article reviewed epidemiological evidence of the associations between night shift work and reproductive outcomes, e.g. menstrual cycle, endometriosis, pregnancy rate, adverse pregnancy outcomes, and ovarian cancer. The potential biological mechanisms connecting night shift work to female reproductive health were also introduced, e.g. melatonin regulation, clock gene regulation, and sex hormone regulation. Through this review, we propose to provide a reference for determining occupational risk factors, conducting subsequent relevant studies, and formulating rational health promotion strategies.

Repercussions of night shift work on nursing professionals' health and sleep quality / Repercusiones del trabajo nocturno en la calidad del sueño y la salud de profesionales de enfermería / Repercussões do trabalho noturno na qualidade do sono e saúde de trabalhadores de enfermagem

ABSTRACT Objective: to analyze the association between sleep quality, health symptoms and the physical, psychological and social effects of work in Nursing professionals working the night shift. Method: a cross-sectional study conducted with Nursing professionals working the night shift of a hospital institution. The instruments used were a socio-occupational and health symptoms questionnaire, the Assessment Scale for Work-Related Harms, and the Pittsburgh Sleep Quality Index. Data were collected between September 2017 and April 2018.The analysis was performed by means of descriptive and analytical statistics. Results: a total of 139 workers took part in the study and a statistical difference was identified between poor sleep quality and the female gender and physical illness variables and health symptoms such as appetite disorder, sensation of indigestion, flatulence, insomnia, difficulty concentrating, unhappiness, sensation of decreased self-esteem and mood lability. Conclusion: it was verified that Nursing professionals working the night shift experienced poor sleep quality, and that this relationship exerts an impact on physical, psychological and social health. Interventions targeted at raising awareness about sleep hygiene can promote better outcomes in these individuals' health.

RESUMEN Objetivo: analizar la asociación entre la calidad del sueño, síntomas de salud y los efectos físicos, psicológicos y sociales del trabajo en profesionales de Enfermería que se desempeñaban en el turno nocturno. Método: estudio transversal, realizado con trabajadores de Enfermería que se desempeñaban en el turno nocturno de una institución hospitalaria. Se utilizaron los siguientes instrumentos: un cuestionario sociolaboral y de síntomas de salud, la Escala de Evaluación de los Daños Relacionados al Trabajo y el Índice de Calidad del Sueño de Pittsburgh. Los dados se recopilaron entre septiembre de 2017 y abril de 2018. El análisis se realizó por medio da estadística descriptiva y analítica. Resultados: se contó con la participación de 139 trabajadores y se identificó una diferencia estadística entre calidad de sueño deficiente y las variables sexo femenino y padecimiento físico, síntomas de salud como trastornos del apetito, sensación de indigestión, flatulencia, insomnio, dificultad para concentrarse, desdicha, sensación de disminución de la autoestima y labilidad en el estado de ánimo. Conclusión: se verificó que los trabajadores de Enfermería que se desempeñaban en el turno nocturno presentaron calidad de sueño deficiente, y esa relación afecta la salud física, psicológica y social. Intervenciones con el objetivo de generar conciencia sobre la higiene del sueño pueden promover mejores resultados en la salud de estas personas.

RESUMO Objetivo: analisar a associação entre a qualidade do sono, sintomas de saúde e os efeitos físicos, psicológicos e sociais do trabalho em trabalhadores de enfermagem que atuavam no turno noturno. Método: estudo transversal, realizado com trabalhadores de enfermagem que atuavam em instituição hospitalar no turno noturno. Utilizaram-se como instrumentos questionário sociolaboral e de sintomas de saúde, Escala de Avaliação dos Danos Relacionados ao Trabalho e o Índice de Qualidade do Sono de Pittsburgh. Os dados foram coletados entre setembro de 2017 e abril de 2018. A análise foi realizada por meio da estatística descritiva e analítica. Resultados: participaram 139 trabalhadores e identificou-se diferença estatística entre qualidade do sono ruim e as variáveis sexo feminino, adoecimento físico e sintomas de saúde como distúrbio de apetite, sensação de má digestão, flatulência, insônia, dificuldade de concentração, infelicidade, sensação de diminuição autoestima e labilidade de humor. Conclusão: constatou-se que os trabalhadores de enfermagem que atuavam no turno noturno experimentavam qualidade do sono ruim, e essa relação impacta na saúde física, psicológica e social. Intervenções visando à conscientização sobre a higiene do sono podem promover melhores resultados na saúde dessas pessoas.

Structural equation modeling of associations between night work and glycemic levels

ABSTRACT Objective Different pathways may lead from night work to metabolic diseases, including type 2 diabetes. This study aimed to explore the direct and indirect pathways from night work to glycemic levels, considering the role of physical activity, waist circumference and snacking using data from ELSA-Brasil. Materials and methods A structural equation model was used to confirm the pathways from night work to glycemic levels. The latent variable, "glycemic levels", included fasting glucose, glycated hemoglobin and 2-hour plasma glucose. Results A total of 10.396 participants were included in the analyses. The final model showed that among women, night work was associated with increased glycemic levels. A statistical significant association between night work and glycemic levels mediated by waist circumference was observed among women and men. Conclusions The association between night shift and glycemic levels can be interpreted as an important step toward understanding the pathways that could explain night work as a risk factor for diabetes using epidemiological data.

Fatores socioeconômicos, demográficos e de estilo de vida associados a padrões alimentares de trabalhadores em turnos / Socioeconomic, demographic and lifestyle factors associated with eating patterns of shift workers

Resumo O objetivo foi identificar os principais padrões alimentares de trabalhadores em turnos e associá-los às variáveis socioeconômicas, demográficas e de estilo de vida. Foram estudado homens entre 20 a 60 anos, trabalhadores de uma metalúrgica do Ceará. Os padrões alimentares foram identificados por análise fatorial por componentes principais, seguida de rotação ortogonal varimax. Utilizou-se Regressão de Poisson para estimar as razões de prevalências (RP) das variáveis em relação aos padrões alimentares. Três padrões foram identificados: comum nordestino, popular e ocidental. Os funcionários do turno da noite e os que fumam ou já fumaram apresentaram menor adesão ao padrão comum nordestino, enquanto aqueles que consomem ou já consumiram bebidas alcoólicas mostraram maior adesão. Para o popular, a maior adesão foi de funcionários com maior escolaridade, residentes na cidade sede da empresa e que já consumiram bebidas alcoólicas apenas no passado, enquanto indivíduos com melhor classificação econômica brasileira mostraram menor adesão. Os homens com idade mais elevada e que fumam apresentaram menor adesão ao padrão ocidental. O conhecimento dessas variáveis associadas aos padrões alimentares identificados poderá orientar o planejamento das ações de práticas alimentares saudáveis no grupo estudado.

Abstract The scope of this paper was to identify the main eating patterns of shift workers and to associate them with socioeconomic, demographic and lifestyle variables. Men between 20 and 60 years of age, workers of a metallurgical company in the state of Ceará, were studied. Eating patterns were identified by factorial analysis by major components, followed by varimax orthogonal rotation. Poisson regression was used to estimate the prevalence ratios (PR) of the variables in relation to dietary patterns. Three patterns were identified: standard northeastern, popular and western. Employees of the night shift and those who smoke or have smoked showed less adherence to the common northeastern pattern, while those who consume or have consumed alcoholic beverages showed greater adherence. For the popular, the highest adherence was of employees with higher education, residents in the company's headquarter city and who only consumed alcoholic beverages in the past, while individuals with better Brazilian economic classification showed lower adherence. Older men and smokers had lower adherence to the western standard. Knowledge of these variables associated with the eating patterns identified may support the planning of healthy eating practices in the group studied.

Implementation of a resident night float system in a surgery department in Korea for 6 months: electronic medical record-based big data analysis and medical staff survey

PURPOSE: To evaluate superiority of a night float (NF) system in comparison to a traditional night on-call (NO) system for surgical residents at a single institution in terms of efficacy, safety, and satisfaction. METHODS: A NF system was implemented from March to September 2017 and big data analysis from electronic medical records was performed for all patients admitted for surgery or contacted from the emergency room (ER). Parameters including vital signs, mortality, and morbidity rates, as well as promptness of response to ER calls, were compared against a comparable period (March to September 2016) during which a NO system was in effect. A survey was also performed for physicians and nurses who had experienced both systems. RESULTS: A total of 150,000 clinical data were analyzed. Under the NO and NF systems, a total of 3,900 and 3,726 patients were admitted for surgery. Mortality rates were similar but postoperative bleeding was significantly higher in the NO system (0.5% vs. 0.2%, P = 0.031). From the 1,462 and 1,354 patients under the NO and NF systems respectively, that required surgical consultation from the ER, the time to response was significantly shorter in the NF system (54.5 ± 70.7 minutes vs. 66.8 ± 83.8 minutes, P < 0.001). Both physicians (90.4%) and nurses (91.4%) agreed that the NF system was more beneficial. CONCLUSION: This is the first report of a NF system using big data analysis in Korea, and potential benefits of this new system were observed in both ward and ER patient management.

Effect of night shift work on the control of hypertension and diabetes in workers taking medication

BACKGROUND: Night shift work induces physiological and psychological stress by altering sleep and biological rhythms and is associated with hypertension, diabetes, obesity, and cardiovascular diseases. Few studies have been conducted on the control of hypertension and diabetes. This study aimed to examine the effect of night shift work on the control rate of hypertension and diabetes. METHODS: Subjects comprised workers aged 20–65 years who underwent specific health examination at a single facility in seven different affiliated examination centers from 1 January to 31 December 2016. Workers were categorised into day workers and night shift workers. Demographic and medical history were taken, and physical examination was done. Blood pressure (BP) and fasting glucose were measured. The control rate of each disease was evaluated based on treatment goals presented in the treatment guidelines of the Korean Society of Hypertension and the Korean Diabetes Association (systolic BP < 140 mmHg and diastolic BP < 90 mmHg; fasting glucose ≤ 130 mg/dL). RESULTS: Among 631,418 subjects, 11.2% (70,450) were night shift workers. Of whom 6.1% (4,319) were taking antihypertensive medication and 2.5% (1,775) were taking diabetes medication. Among patients taking antihypertensive medications, the proportion of those whose BP was controlled to suit treatment goals was 81.7% (26,635) of day workers and 77.4% (3,343) of night shift workers, which was significantly different (p < 0.001). Among patients taking diabetes medications, the proportion of those whose blood glucose was controlled to suit treatment goals was 37.4% (4,489) of day workers and 36.5% (647) of night shift workers, but the difference was not significant. The control rates for patients taking antihypertensive medications (odds ratio [OR]: 0.74, 95% confidence interval [CI]: 0.68–0.80) were lower among night shift workers than day workers with adjustment for age, sex, smoking history, alcohol consumption, exercise, and obesity. However, there were no differences in control rates for patients taking diabetes medications (OR: 0.99, 95% CI: 0.87–1.10) between day workers and night shift workers. CONCLUSIONS: Night shift work can have an effect on the uncontrolled BP in workers taking antihypertensive medications. Therefore, additional efforts for disease control are necessary for night shift workers with hypertension.

Qualidade de vida: o desafio do trabalho noturno para a equipe de enfermagem / Life quality: the night shift work challenge to nursing team / Calidad de vida: el reto de trabajar en la noche para el equipo de enfermería

Objective: Our goal herein has been to gain further insights regarding the life quality and its association with sociodemographic characteristics of nursing professionals working at night shift. Methods: It is an analytical research type with quantitative approach. The research was performed in a hospital of Montes Claros city, Minas Gerais State, Brazil, over the year of 2014 and had 145 workers participants. The survey has been done by applying a sociodemographic questionnaire and the Abbreviated Instrument for the Assessment of the Life Quality (WHOQOL-bref) in August 2014. The descriptive analysis and student's t-test was used in order to check for possible associations. Results: The majority of the workers were female, aged up to 35 years old, having intimate partner and children. The following dimensions had shown the worst scores: environment and physical. The comparison of average scores within the four dimensions has revealed that the most significant covariates were as follows: sex, physical activity, additional job, civil status and working time. Conclusion: In the present study was observed that the workers require greater attention to the environmental and physical dimensions, and also in the sociodemographic characteristics that interfered in their life quality

Objetivo: Avaliar a qualidade de vida e sua associação com as características sociodemográficas dos trabalhadores da enfermagem do período noturno. Métodos: Pesquisa do tipo analítico, com abordagem quantitativa, com 145 trabalhadores, realizada em 2014 em uma instituição hospitalar de Montes Claros, Minas Gerais-Brasil. Foram aplicados um questionário sociodemográfico e o Instrumento Abreviado de Avaliação da Qualidade de Vida, em agosto de 2014. Realizou-se a análise descritiva e o teste t student para verificação de associações. Resultados: Predominaram trabalhadores do sexo feminino, com idade de até 35 anos, com companheiro(a) e filhos. Os domínios meio ambiente e físico apresentaram piores escores. Na comparação dos escores médios nos quatro domínios, as covariáveis mais significativas foram: sexo, atividade física, outro vínculo, estado civil e tempo de trabalho. Conclusão: Os trabalhadores demandam maior atenção nas dimensões ambientais e físicas, e nas características sociodemográficas que interferiram na qualidade de vida

Objetivo: Evaluar la calidad de vida y su asociación con características sociodemográficas de los trabajadores de la enfermería durante la noche. Método: Un estudio de tipo analítico, con un enfoque cuantitativo, con 145 trabajadores, que se celebró en 2014 en un hospital de Montes Claros, Minas Gerais Gerais-Brasil. Se les aplicó un cuestionario sociodemográfico y el abreviado Instrumento de Evaluación de la Calidad de Vida (WHOQOLbref), en 2014 agosto. El análisis descriptivo y la prueba t de student para comprobar para las asociaciones. Resultados: La mayoría de los trabajadores era una mujer, a la edad de 35 años, con compañero(a) y los niños. Las esferas física y medio ambiente tuvo las peores puntuaciones. La comparación de puntuaciones medias en cuatro zonas, las covariables fueron: El sexo, la actividad física, otro bono, el estado civil y el tiempo de trabajo. Conclusión: Los trabajadores requieren una mayor atención en las zonas con menor puntuación y las características que interfieren con la calidad de vida

Comparing marital satisfaction of male and female BPO night shift workers in the Philippines

@#<p style="text-align: justify;"><strong>BACKGROUND AND OBJECTIVE:</strong> The study presented and compared the level of marital satisfaction of male and female Business Process Outsourcing (BPO) night shift workers. Prior to this study, there were researches that looked into the effect of night shift or nonstandard work schedule on the workers' marital life. There were also studies that tried to connect shift work to the quality of married life of BPO workers in the Philippines but they were conducted using the perspectives of the wives only. Thus, this study offered a holistic view on marital satisfaction because it took into consideration the views of both husbands and wives.</p><p style="text-align: justify;"><strong>METHODS AND RESEARCH PARTICIPANTS:</strong> Sixty-six males and females in Metro Manila were purposefully selected and surveyed, of whom 11 were interviewed face to face. Data from the survey were analyzed using Mann Whitney U Test of Significance. Information from the qualitative interview was used to validate quantitative data.</p><p style="text-align: justify;"><strong>RESULTS: </strong>Results showed that male and female BPO night shift workers were satisfied with their marriage. There is no significant difference in the level of marital satisfaction of males and females.</p><p style="text-align: justify;"><strong>CONCLUSION:</strong> It is very evident from the study findings that economic and financial capacity affects marital satisfaction. This study can also help practitioners of pre-marital counseling. It was found in the study that compatibility of the couples' expectations in the marriage and with each other influenced marital satisfaction. </p>

Night Shift Work and Risk of Depression: Meta-analysis of Observational Studies

This study aimed to assess whether night shift work is associated with the risk of depression by using a meta-analysis of observational studies. We searched PubMed and EMBASE in August, 2016 to locate eligible studies and investigated the association between night shift work and the risk of depression, reporting outcome measures with adjusted odds ratios (ORs) or relative risks (RRs) and 95% confidence intervals (CIs). In the meta-analysis of a total of 11 observational studies with 9 cross-sectional study, 1 longitudinal study, and 1 cohort study, night shift work was significantly associated with an increased risk of depression (OR/RR, 1.43; 95% CI, 1.24–1.64; I² = 78.0%). Also, subgroup meta-analyses by gender, night shift work duration, type of occupation, continent, and type of publication showed that night shift work was consistently associated with the increased risk of depression. The current meta-analysis suggests that night shift work is associated with the increased risk of depression. However, further large prospective cohort studies are needed to confirm this association.

As produções científicas sobre o trabalho noturno na enfermagem: uma revisão de literatura / La producción científica acerca del trabajo nocturno en enfermeria: una revisión de literatura / Scientific production about night shift work in nursing: a review of literature

Objective: recognizing the scientific productions that approach night shift work carried out by the nursing staff in hospitals. Method: this is a bibliographic, narrative, exploratory and descriptive research. The search was developed in the Virtual Health Library, from July to August 2012. Results: studies point to the fact that most workers are married women with spouses and/or children, who have to do housework and deal with their profession, in one or two jobs. Despite of the negative repercussion of the night shift work upon the health of the workers, they often do this shift because of their choice/personal need or professional and not by imposition of the institution. Conclusion: there is a growing interest in this topic, mainly in terms of repercussions of this work shift for the health of nursing professionals. It should be highlighted that it is fundamental to reduce these repercussions, as well as to diminish the hospitalization rates in a way to contribute for the promotion of health and satisfaction at work.

Objetivo: conhecer as produções científicas que abordam o trabalho noturno realizado pela enfermagem em instituições hospitalares. Método: trata-se de uma pesquisa bibliográfica, narrativa, exploratória e descritiva. A busca foi realizada na Biblioteca Virtual de Saúde nos meses de julho e agosto de 2012. Resultados: os estudos apontam que a maioria destes trabalhadores são mulheres casadas ou com companheiros e/ou filhos, que se dividem entre as tarefas do lar e profissionais em um ou dois empregos. Apesar de o trabalho noturno repercutir negativamente na saúde dos trabalhadores, estes frequentemente estão neste turno por escolha/necessidade pessoal ou profissional e não por imposição da instituição. Conclusão: há crescente interesse na temática, principalmente em relação às repercussões desse turno de trabalho para a saúde dos trabalhadores de enfermagem. Ressalta-se que minimizar estas repercussões é fundamental, assim como reduzir os índices de adoecimento, como forma de contribuir na promoção da saúde e satisfação no trabalho.

Objetivo: conocer las producciones científicas que enfocan en el trabajo nocturno realizado por las enfermeras en los hospitales. Método: se trata de una investigación bibliografica, narrativa, exploratoria y descriptiva. La busqueda se realizo em la Biblioteca Virtual de Salud em Julio y agosto de 2012. Resultados: estudios muestran que la mayoría de estos trabajadores son mujeres casadas o conparejas y/o niños, que están divididas entre las tareas de casa y profesionales en uno o dos puestos de trabajo. A pesar del trabajo nocturno reflejar negativamente en la salud de los trabajadores, a menudo están en este turno por elección/ necesidad personal o profesional y no por imposición de la institución. Conclusión: existe un creciente interés en el tema, sobre todo en relación con el impacto de este turno de trabajo para la salud de los trabajadores de enfermería. Es de destacar que minimicen estos efectos es essencial, así como reducir la incidencia de la enfermedad como una contribución en la promoción de la salud y la satisfacción en eltrabajo.

Inter-relações entre o estado nutricional, fatores sociodemográficos, características de trabalho e da saúde em trabalhadores de enfermagem / Interrelationships between nursing workers’ state of nutrition, socio demographic factors, work and health habits

Explorou-se as relações conjuntas entre o estado nutricional, as variáveis relacionadas às condições sociodemográficas, o trabalho e os comportamentos de saúde em profissionais de enfermagem, a partir da técnica de análise de correspondência. Trata-se de um estudo seccional realizado com 917 trabalhadores de enfermagem de um hospital público do Rio de Janeiro. Os resultados apontaram a formação de quatro grupos, sendo três agrupados segundo as categorias do índice de massa corporal. O grupo que conteve os obesos incluiu condição de saúde ruim, fatores socioeconômicos atuais e pregressos desfavoráveis e ex-trabalhadores noturnos. Por outro lado, o grupo de baixo/adequado agregou as condições mais favoráveis, enquanto o grupo com sobrepeso foi composto por tabagismo, consumo de álcool e trabalho noturno atual (até cinco noites/quinzena). Dentre as relações conjuntas de categorias associadas aos níveis de estado nutricional, destacaram-se aquelas relacionadas às condições socioeconômicas atuais e pregressas avaliadas, destacando a importância dos determinantes sociais ao longo da vida. .

The interrelationships between professional nursing workers’ state of nutrition, variables relating to their socio demographic relationships, their professional work, and health behavior, were examined based on a correspondence analysis technique. This is a sectional study carried out involving 917 nursing professionals in a public hospital in Rio de Janeiro. The results show the formation of four groups, three of them grouped under BMI (body mass index) categories. The obese individuals group included poor health, current socio economic conditions, unfavorable past conditions, and former night shift workers. The low/adequate group showed the most favorable conditions, while the group of overweight individuals also included smoking, alcohol consumption, and current night shift work (up to five nights per two-week period). Specifically, among the interrelationships between the states of nutrition levels, we highlight those relating to current and previously evaluated socio economic conditions, and underscore the life-long importance of social indicators.

Study in factors influencing marital quality of night- shift nurses in general hospitals / 中国实用护理杂志

Objective To discuss the effect of night- shift work on marital quality, and analyze the relations between the marital quality and related factors in order to explore the method to tackle the marital crisis of night- shift nurses. Methods 500 nurses were selected in general hospitals of Liaoeheng above county-level, each tested nurse filled out marital quality inventory, general well-being scale,social support scale and Eysenck personality questionnaire(EPQ), and withdrew 416 copies(effective rate 90.83%) of ef-fective questionnaire after filling independently. Results (1)There were significant difference in the var-ious scores of marital quality between the nurses and the norm. (2) The marital quality was correlated with general well-being, social support and psychoticism, neuroticism and lying degree of EPQ.(3) Multivariable linear regression which took marital quality as dependent variable ,the variables which entered the equation were age of marriage, social support, psychoticism,subjective well- being,lying degree and objective support. Conclusions (1) The marital quality of night-shift nurses was low. (2)Marital quality was positively cor-relat-ed with subjective well-being, social support and lying degree, negatively correlated with neuroticism and psychoticism. (3) Marital quality were influenced by time of marriage, social support, psycholepsy, sub-jec-tive well-being, lying degree and objective support, among which social support has a great influence.

Factores de rieggo relacionados con la ulcera pptica gastroduodenal y exposiciion a nocturnidad / The risk factors related with the gastroduodenal peptic ulcer

Se compararon los factores de riesgo relacionados con la úlcera péptica gastroduodenal en una muestra de 76 trabajadores, divididos en dos grupos: expuestos y no a nocturnidad; así como entre los subgrupos del primero. El diseño de estudio fue tipo analítico de corte transversal con un muestreo no probabilístico. Se aplicó la prueba Chi cuadrado (alfa > o = 95%) para la significación de las diferencias entre los grupos. E l grupo expuesto a nocturnidad y el subgrupo: rotativo de cambios rápidos, presentaron mayor incidencia de los factores de riesgo de la UPGD. Los turnos de trabajo nocturnos y específicamente los trabajadores con rotación rápida, tuvieron condiciones más propicias para la génesis de la UPGD, por la frecuencia de aparición de los factores de riesgo y presuponen mayor interacción con los trastornos en los ritmos circadianos de sus trabajadores.

The risk factors related with the gastroduodenal peptic ulcer were compared in a sample of 76 workers divided in two groups: exposed and not to nigth shift work as well as among the subgrups of the first one. The study design was analytic type of traverse court with a not probabilistic sampling. The test chi-square was applied (alfa > or = 95%) for the significance of the differences among the groups. The exposed group to night shift work and the subgrup with rotative quick changes shift work they presented bigger incidence of the risk factors for that desease. The night shift work and specifically the workers with rotative quick chances had more appropriated conditions for happening of the gastroduodenal peptic ulcer because the frequency of appearance of the risk factors and they presuppose bigger interaction with circadian rhythm dysruptions.

Percepcion subjttiva de adaptacion al turno laboral en trabajadores con ulcera peptcaa / Subjective perception of adaptation to the labor shift in workers with ulcerates peptic

Se calculó un modelo matemático-estadístico por medio del análisis multivariado discriminante a una muestra de 76 trabajadores, para diferenciar los trabajadores expuestos y no expuestos a nocturnidad; nos basamos en la expresión de los factores de riesgo relacionados con la úlcera péptica gastroduodenal (p<0,05) y se determinó de forma comparativa entre los grupos la percepción subjetiva de adaptación al turno de trabajo . El diseño de estudio fue analítico de corte transversal. Los instrumentos aplicados para explorar los factores de riesgo fueron: Factores de individualidad, Personalidad, Escala Sintomática de Estrés, Exploración de Fatiga Laboral y Situación Laboral .Se aplicó la Escala Analógico-Visual como instrumento de evaluación de la percepción subjetiva de adaptación al turno de trabajo. La función discriminante calculada tuvo una capacidad de pronóstico de 86,8% y la percepción subjetiva de adaptación al turno de trabajo fue mala en 43,4 % de la muestra, sin diferencias significativas entre los grupos. La capacidad discriminante de este modelo puede constituir un primer paso en la estrategia de prevención de esta afección en nuestros trabajadores y alertarnos acerca del valor que pueden tener variables psicológicas como la percepción subjetiva de adaptación al turno de trabajo en la misma.

A mathematical-statistical model was calculated by means of the multivariade discriminant analysis (p <0,05) to a sample of 76 workers, to differentiate the exposed workers and not to night shift work, basing us on the expression of the risk factors related with the gastroduodenal peptic ulcer and the subjetive perception of adaptation to the type of shift work was determinated in comparative form betwen groups. The study design was analytic of traverse court. The instruments applied to explore the factors of risk were: Factors of Individuality, Personality, Symptomatic Scale of Stress, Exploration of Labor Fatigue and Labor Situation. The analogical-visual Scale was applied to evaluate the subjetive perception of adaptation to shift work. The calculated discriminant function had a capacity of prognostic of 86,8% and the subjetive perception of adaptation to shift work was bad in 43,4 % of the sample without any significant differencies betwen groups. This result can constitute a first step in the strategy of prevention of this affection in our workers and keep alert about impact of psicological variables as subjetive perception of adaptation to shift work in that desease.

Investigation of Sleep Status and Effect of Night Shift Work on Sleep in Nurses / 中国康复理论与实践

@#ObjectiveTo investigate the sleep status and effect of night shift work on sleep in nurses.MethodsSleep characteristics and qualities of 348 nurses, 50 communication persons and 100 night-guards were analyzed with Pittsburgh Sleep Quality Index (PSQI), and insomnia was diagnosed based on DSM-IV criteria.Results71.86% of nurses had bad sleep quality (PSQI>7); the rate of insomnia was 38.22%. The same data were 74% and 48% respectively in communication persons, and 26.76% and 7% in night-guards. The sleep quality of nurses was related to age and years of night shift work. The sleep quality of nurses was similar to communication persons (P>0.05), but significantly different from that of night-guards (P<0.01).ConclusionShift work manner influences sleep status of nurses and makes them having disturbances on falling sleep time, the time of sleeping, sleep efficiency and daytime function. But it doesn't need medication.