Tool Frame Calibration for Robot-Assisted Ultrasonic Testing.

Tool frame calibration has been widely used in robot-assisted printing, welding, and grinding, but it is not suitable for ultrasonic testing because the robot is submerged in water. The purpose of this paper is to present a tool frame calibration method, which is suitable for improving the precision of ultrasonic testing. In uniform mediums, sound travels along a straight line like ray. A reflector is fixed in water to reflect ultrasound, which makes it possible to measure distances between incidence points on a reflector and tool center point (TCP) on an ultrasound transducer. In addition, the positions and poses of the end flange are recorded through a robot controller. Finally, an optimization method is applied to calculate the position and pose errors of the tool frame relative to the end flange according to such records. The presented method was implemented in an ultrasonic testing system. We selected 100 incidence points on the reflector to calculate the assembly errors of the transducer. The pulse amplitude rose obviously after calibration, which verifies that this is an effective method. Considering that ultrasonic transducers can be used as a measuring tool, this paper proposes a tool frame calibration method for ultrasonic testing robots without introducing other measuring devices, which draws the conclusion that tool frame can be calibrated through ultrasound.

Relationship between night shift and sleep problems, risk of metabolic abnormalities of nurses: a 2 years follow-up retrospective analysis in the National Nurse Health Study (NNHS).

BACKGROUND AND PURPOSE: Efforts to improve nurses' physical and mental health are critical to ensuring the safety and quality of the healthcare system. Long-term studies targeting the relevancy of nurses' occupation characteristics with health conditions remain insufficient. This study aimed to examine the relationship between nurses' night shift and sleep problems and metabolic abnormalities risk. METHODS: This study was a part of the National Nurse Health Study, an ambispective cohort study in China, in 2021. Based on an integration physical examination data system, this study carried out a retrospective analysis of 730 nurses from 2018 to 2020 and combined with a questionnaire survey in 2021. The STROBE guidelines were adopted for reporting. RESULTS: In the 23 (23.0, 24.0) months follow-up, higher night shift load was associated with more sleep problems such as shortened sleep duration, sleep disorders, poor sleep quality, and sleep deprivation. Moreover, night shift load was associated with chronic diseases risk factors, increasing body mass index and body fat, with more night shift density, increasing the occurrence of low levels of high-density lipoprotein cholesterol, high triglyceride, triglyceride/high-density lipoprotein cholesterol ratio, and serum uric acid. CONCLUSION: The night shift load has become an occupational health concern, contributing to chronic diseases relevant metabolic risk factors and negative influence on sleep health. Focus on the strategies to improve the sleep quality of nurses undergoing night shift work, optimize work scheduling and ongoing monitor the relevant risk factors are essential to enhance the stability and well-being of the nursing workforce. CLINICAL TRIALS REGISTRATION INFORMATION: NCT04572347, on October 1, 2020. https://www. CLINICALTRIALS: gov/ct2/show/NCT04572347.

The role of family support in diabetes self-management among rural adult patients.

AIMS AND OBJECTIVES: This study aimed to investigate the role of the family in supporting diabetes self-management and explore the possible mechanisms between family and diabetes self-management among rural patients in China. BACKGROUND: The prevalence of Type 2 diabetes mellitus (T2DM) is growing rapidly in rural areas of China, where healthcare resources remain relatively poor and family members play an important role in chronic disease self-management. DESIGN: This was a multicentre cross-sectional study. METHODS: A total of 276 adults with T2DM were recruited from nine county hospitals in China. Diabetes self-management, family support, family function, and family self-efficacy were evaluated using the mature scales. A theoretical model was built based on the social learning family model and previous studies and then verified using a structural equation model. The STROBE statement was used to standardise the study procedure. RESULTS: Family support and general family factors, including family function and self-efficacy, were positively correlated with diabetes self-management. Family support fully mediates the relationship between family function and diabetes self-management and partially mediates the relationship between family self-efficacy and diabetes self-management. The model explained 41% of the variability in diabetes self-management and had a good model fit. CONCLUSION: General family factors can explain nearly half of the change in diabetes self-management in rural areas of China, while family support is a mediator between general family factors and diabetes self-management. Family self-efficacy, a potential intervention point of family based diabetes self-management education, can be improved by building special lessons for family members. RELEVANCE TO CLINICAL PRACTICE: This study emphasises the role of family in diabetes self-management and proposes suggestions for diabetes self-management intervention among patients with T2DM in rural areas of China. PATIENT OR PUBLIC CONTRIBUTION: Patients and their family members completed the questionnaire which was used for data collection.

Eating window and eating habits of adults in China: A cross-sectional study.

Objective: Previous studies have demonstrated that eating time and habits play key roles in human health. However, there is a paucity of research on the epidemiology of eating window and eating habits in China. This study aimed to investigate the relationship between eating window and eating habits among adults in mainland China and explore the factors influencing these parameters. Design: Cross-sectional study. Setting: A questionnaire comprising demographic data, metabolic index, eating window and eating habits was administered via the Internet. Participants: 1596 adults from mainland China. Results: Eating window of all participants was 13.03 ± 2.02 h (mean ± standard deviation [SD]), which was longer than previously reported in smaller more controlled studies from China. Area of residence and occupation were significant factors influencing eating window after controlling for other factors (area of residence: ß, -0.499; 95% confidence interval [CI], -0.897 to -0.101, p = 0.014; occupation: ß, -0.309, 95% CI, -0.496 to -0.121, p = 0.001). Participants typically commenced eating at 08:00 h (interquartile range [IQR]: 8:00-9:00) and ceased eating at 20:00 h (IQR: 20:00-22:00). Regular meals which mean two or three meals per day regularly constituted the dominant eating pattern of participants (n = 1233, 77.3%) and 819 (51.1%) participants preferred cooking for themselves. Conclusion: This study revealed that eating window of adults in China generally around 13 h. Area of residence and occupation were the main factors influencing eating window. Our data provide a foundation for future studies on eating window and eating habits in China.

The effectiveness of a self-efficacy-focused structured education programme on adults with type 2 diabetes: A multicentre randomised controlled trial.

AIMS AND OBJECTIVES: To evaluate the effectiveness of a self-efficacy-focused structured education programme on outcomes in adults with type 2 diabetes (T2DM) without insulin therapy. BACKGROUND: Structured education regarding metabolic control in T2DM adults without insulin therapy has not always been effective, and this lack of effectiveness might be due to overlooking self-efficacy. Whether a self-efficacy-focused structured education programme could improve metabolic and psychosocial outcomes for T2DM adults more effectively remains unknown. DESIGN: A multicentre parallel randomised controlled concealed label trial. METHODS: The study conducted in outpatients of four hospitals in China. A total of 265 T2DM adults without insulin therapy were randomly assigned to an intervention group of a self-efficacy-focused structured education programme (n = 133), or to a control group of routine education (n = 132). The differences in metabolic and psychosocial outcomes were investigated at baseline, three- and 6-month follow-ups. RESULTS: The primary outcome of A1C and the secondary outcomes of weight, body mass index, waist circumference, diastolic pressure, self-efficacy, self-management behaviours and knowledge improved significantly in the intervention group compared with the control group at 6-month follow-up. The differences in A1C between groups for patients with a low educational background at 6-month follow-up were significant. No significant differences were found in other secondary outcomes of systolic pressure, the blood lipid profile and diabetes distress between groups at 6-month follow-up. CONCLUSIONS: This programme can improve glycaemic control, weight control, diastolic pressure, self-efficacy, self-management behaviours and diabetes knowledge for T2DM adults. RELEVANCE TO CLINICAL PRACTICE: This self-efficacy-focused structured education programme is effective and can be incorporated into regular clinical care and led by trained staff (e.g. nurses), and it can be implemented in patients with low educational backgrounds.

Self-efficacy-focused education in persons with diabetes: a systematic review and meta-analysis.

AIMS: The aims of this study were to assess the effectiveness of self-efficacy-focused education on health outcomes in persons with diabetes and review the strategies employed in the interventions. BACKGROUND: The traditional educational interventions for persons with diabetes were insufficient to achieve the desired outcomes. Self-efficacy-focused education has been used to regulate the blood sugar level, behaviors, and psychosocial indicators for persons with diabetes. DESIGN: This study is a systematic review and meta-analysis. METHODS: Studies on the effectiveness of self-efficacy-focused education in persons with diabetes were searched in six databases from inception until January 2018. The data were extracted and the quality of literature was assessed independently. Review Manager 5.3 was applied for the meta-analysis. Besides, the findings were summarized for narrative synthesis. RESULTS: Sixteen trials with 1,745 participants were included in the systematic review and ten trails with 1,308 participants in the meta-analysis. The meta-analysis for A1C, self-efficacy, self-management behaviors, knowledge, and quality of life (QOL) were represented in four, six, six, three, and three studies, respectively. The findings indicated that self-efficacy-focused education would probably reduce A1C, enhance self-efficacy, regulate self-management behaviors, increase knowledge, and improve the QOL for patients with diabetes. Weak quality studies, limited participants, and heterogeneity hindered the results pooled of the other secondary outcomes of fasting blood glucose, 2-hour plasma glucose, weight, weight circumference, body mass index, plasma lipid profile, and other psychological indicators. Goal setting, self-management skills practicing and recording, peer models, demonstration, persuasion by health providers, and positive feedback were the most commonly used strategies in the interventions. However, physiological/emotion arousal strategies were relatively less applied and varied significantly. CONCLUSION: Individuals with diabetes may benefit a lot from the self-efficacy-focused education. However, insufficient high-quality studies, short-term follow-up period, relatively deficient physiological/emotion strategies, and incomplete outcome assessments were the drawbacks in most studies. Establishing satisfactory self-efficacy-focused education and better evaluating the effects were required in further studies.

Variations of dry eye disease prevalence by age, sex and geographic characteristics in China: a systematic review and meta-analysis.

BACKGROUND: Dry eye disease (DED) is one of the most prevalent ocular diseases in the world. In China, new lifestyles driven by information technology and the rapid ageing process have brought DED a severe public health concern. The aim of our study was to obtain the pooled prevalence of DED in China and explore its potential correlates. METHODS: A comprehensive systematic review was conducted to identify all relevant literature published since 1990. Meta-analysis and meta-regression approaches were adopted to estimate the prevalence of DED. The number of people with DED was obtained by multiplying the corresponding demographic data in 2010. RESULTS: Advanced age, female sex and larger latitude were significant risk factors for DED by symptoms and signs, whereas only advanced age was positively associated with an increased prevalence of DED by symptoms. In 2010, the prevalence of DED by symptoms and signs were 13.55% (95% CI = 10.00-18.05) and that of DED by symptoms was 31.40% (95% CI = 23.02-41.13) in Chinese people aged 5-89 years, corresponding to a total of 170.09 million (95% CI = 125.52-226.63) and 394.13 million (95% CI = 288.99-516.30) affected individuals respectively. CONCLUSIONS: The huge burden of DED in China calls for more public health attention and actions. Improved epidemiological studies on DED prevalence are still urgently needed.

Prevalence of carotid atherosclerosis and carotid plaque in Chinese adults: A systematic review and meta-regression analysis.

BACKGROUND AND AIMS: The national representative prevalence of carotid atherosclerosis (CAS) or carotid plaque (CP) in the general Chinese population has never been estimated. We aim to generate the prevalence and number of people with CAS and CP in the general Chinese population. METHODS: We searched China National Knowledge Infrastructure, Wanfang Data, VIP Database for Chinese Technical Periodical, PubMed, Embase and Medline. Articles reporting the prevalence of CAS or CP in the general Chinese population were included. A multilevel mixed-effects logistic regression was used to estimate the age- and gender-specific prevalence of CAS and CP. The effects of risk factors for CAS were assessed by a random-effects meta-analysis. RESULTS: The prevalence of CAS and CP increased with advanced age. Males had a higher prevalence of CAS and CP than females consistently across all age groups. Overall, 27.22% and 20.15% of Chinese people aged 30-79 years were with CAS and CP, respectively, in 2010, equivalent to 207.73 million and 153.82 million affected individuals. With demographic ageing, the number of people affected by CAS and CP will increase to 267.25 million and 199.83 million, respectively, by 2020. In addition, current smoking, hypertension and diabetes were found to be risk factors for CAS. More than 70% of the national CAS cases were in rural China in 2010. CONCLUSIONS: CAS and CP are highly prevalent in China. The huge disease burden of CAS and CP calls for efforts on effective preventive health strategies and early-detection of CVDs in people with CAS or CP, especially in rural areas.