Sick building syndrome (SBS) is the term used to describe the medical condition in which people in a building suffer from symptoms of illnesses for no apparent reason. SBS was found to be associated with indoor air quality (IAQ) but there are a variety of determinants (buildings, in particular). Identifying and controlling factors related to SBS is crucial for improving worker health and efficiency. A cross-sectional study was conducted to investigate (1) the prevalence of respiratory symptoms and skin SBS and (2) their associations with IAQ among office workers in administrative offices in an academic medical institute. A self-reporting questionnaire assessing the worker’s characteristics, working conditions, and perception of working environments was used. The building assessment was via a walk-through survey and IAQ measurement. Of 290 office workers, 261 (90%) in 25 offices of 11 buildings took part in the survey. The highest prevalence of SBS was nasal symptoms (25.3%). We found that to reduce the risk of SBS, optimal air temperature levels in air-conditioned offices should be lower than 23 °C, with relative humidity between 60% and 70%. Lowering indoor CO₂ levels below 700 ppm may be indicative of adequate ventilation to prevent SBS by reducing worker discomfort and indoor contaminants (e.g., formaldehyde).

Background: Burnout among resident physicians during training has been prevalent, prompting training centers to introduce interventions at the individual or organizational level. However, empirical evidence is crucial before implementing such programs in practice. Methods: A systematic review and meta-analysis was carried out to evaluate the effectiveness of individual and organizational interventions in reducing burnout among resident physicians. Searching was done across five databases—PubMed, Scopus, ScienceDirect, Embase, and Cochrane Library from 1 December 2023 to 26 August 2024. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement was used for our reporting of study selection process. Eligibility criteria were randomized or non-randomized designs, with prospective intervention, with a comparator group focused on individual or organizational interventions reducing burnout, in any language and publication date. The Maslach Burnout Inventory scores for emotional exhaustion (EE), depersonalization (DP), and personal accomplishment (PA) were the three outcome measures. Two investigators independently extracted the data. The risk of bias was evaluated using Cochrane risk-of-bias tool for randomized trials (RoB2) and non-randomized studies of interventions (ROBINS-I). Cohen’s d and heterogeneity was estimated using a random-effects DerSimonian-Laird model and visualized by forest plots. Sensitivity analyses were carried out by leave-one-out meta-analysis. Results: We identified 33 eligible studies (n = 2536), comprising 25 (75.8%) individual intervention studies and 8 (24.2%) organizational intervention studies. Cohen’s d for individual intervention versus control were as follows: EE -0.25 (95% CI -0.40 to -0.11, p < 0.01, I² = 49.3%), and DP -0.17 (95% CI -0.32 to -0.03, p = 0.02, I² = 50.0%). The organizational intervention showed no significant association with any domain. Sensitivity analyses were robust in all outcomes, with differences in intervention description and design identified as potential contributors to heterogeneity. Conclusions: Various interventions, including individual coaching, meditation, and organization interventions, have been implemented to improve resident burnout. The effectiveness of intervention demonstrated none to small practical significance in improving burnout. Data inconsistency and high risk of bias across studies limited the validity of the pooled results. Further studies should focus on a combined approach. Registration: The study was registered on PROSPERO, under PROSPERO registration number CRD42022349698.

Burnout has become a significant occupational concern for resident physicians, primarily attributed to chronic workplace stressors, inadequate work-life balance, high expectation from attending staffs, steep learning curve, and limited patient care experience. The study aimed to investigate the prevalence and associated factors of burnout in medical residents. This cross-sectional study was conducted online questionnaire of all specialists in a university hospital from September to October 2022. Burnout was assessed using the Maslach Burnout Inventory-Human Services Survey for Medical Personnel. The data collection encompassed information on socio-demographics, working conditions, psychiatric issues, and medical errors as potential predictive variables. To analyze the association between these factors and burnout, a confounder summary score model was employed in four separate models utilizing multivariable logistic regression. A total of 238 participants, the average age of participants was 28.1 years (SD 2.7), and 56.2% of them were female. Weekly working hours averaged 75 (SD 21.8). Burnout prevalence was 46.3%. This prevalence was characterized by high levels of emotional exhaustion (57.1%) and depersonalization (36.1%), along with low levels of personal accomplishment (52.4%). Summary of association in each domain with burnout were as follow: demographic determinants, (adjusted odds ratio (aOR) 2.80, 95% CI 1.68–4.64), working conditions (aOR 2.97, 95% CI 1.54–5.71), psychiatric determinants (aOR 2.47, 95% CI 1.77–3.45) medical errors (aOR 2.14, 95% CI 1.05–4.34). Medical residency training programs should provide a supportive system that actively monitors and addresses depressive symptoms. Implementing preventive measures, such as increasing pay rates, can play a role in mitigating burnout.

Motorcycle food delivery riders (MFDRs) are at a higher risk of traffic accidents compared to regular motorcyclists. Their safety is a significant issue in many developing countries, particularly in Thailand, which has the highest rate of motorcyclist fatalities globally. This study aimed to determine the prevalence of traffic accidents and explore the association between risky riding behaviors, concerns for working conditions, and accidents among MFDRs. This cross-sectional study was conducted in Chiang Mai, Thailand. Data were collected from a total of 709 MFDRs through an online platform. Collected data included working conditions, risky riding behaviors, concerns about their work conditions, and experience with traffic accidents. In the past six months, the incidence of traffic accidents among MFDRs was 18.9 %., with 2.4 % experiencing hospitalized major injuries, 11.4 % having non-hospitalized major injuries, and 5.1 % having minor injuries. A total of 84.3 % of MFDRs exhibited at least one risky riding behavior, while 5.8 % engaged in ten or more such behaviors. Multivariable logistic regression analysis with adjustments for sex, age, and body mass index indicates that red-light running (adjusted odds ratio, aOR 2.78, 95 % CI 1.07 to 7.21) and being concerned for customer behaviors (aOR 2.66, 95 % CI 1.26 to 5.62) were significantly associated with major injuries. Additionally, factors such as sleeping less than 6 h per day (aOR 1.68, 95 % CI 1.10 to 2.56), riding the wrong way (aOR 2.49, 95 % CI 1.12 to 5.52), and having concern for customer behaviors (aOR 1.91, 95 % CI 1.03 to 3.55) were associated with total number of accidents. Red-light running and concerns for customer behavior in MFDRs are associated with a higher risk of traffic accidents with major injuries. Effective strategies and interventions should focus on strengthening the enforcement of traffic risk behaviors and encouraging food delivery companies to establish regulations relating to the workers’ concerns.

During the COVID-19 pandemic, N95 respirators were commonly used in many situations. Respiratory problems from prolonged use of respirators were discussed in many studies, which show varied results. From the inconclusive results, the current systematic review and meta-analysis discerned the effects of the N95 respirator by assessing the oxygen and carbon dioxide changes in both high- and low-to-moderate-intensity physical activities in a healthy population. Thirteen studies were identified for inclusion in the study. In high-intensity physical activities, our meta-analysis showed borderline lower oxygen saturation and higher carbon dioxide partial pressure, but oxygen saturation did not change in low-to-moderate physical activity. The use of N95 respirators could statistically affect the physiologic changes of carbon dioxide and oxygen in high-intensity physical activity among healthy participants, but this may not be clinically significant. Some users who have certain health conditions, such as respiratory problems, should be informed of the clinical symptoms related to hypercarbia and hypoxia for the early detection of adverse effects of N95 respirators.