Low back pain (LBP) is one of the most common health problems all over the world. The lifetime prevalence of low back pain is reported to be over 70% in European countries and the peak prevalence occurred between ages 35 and 55 in the working population 1) . Despite its benign nature, LBP is the leading cause of disability and the highest cost for workers' compensation in industrialized countries [2][3][4][5][6] . In Thailand as well, high prevalence of LBP is reported. The six month prevalence of LBP was more than 50% in the study population over 50 yr old 7) .Risk factors for LBP have not been completely elucidated. The most frequently reported risk factor for LBP is heavy physical workload such as lifting, awkward posture, and whole body vibration [8][9][10] . Life style is also considered a risk factor of LBP. Smoking behavior 8,11,12) , lack of physical exercise 8) , and short sleep hours 13) increase the risk of LBP. A systematic review showed that there was no evident relationship between alcohol consumption and LBP 14) . An association between LBP and psychosocial factors has also been reported 8,15,16) . Food processing workers are known to be a high risk population for LBP because they work in awkward postures, with lifting and manual handling of heavy Received October 30, 2009 and accepted March 12, 2010 Abstract: This study assessed the prevalence of low back pain (LBP) and investigated risk factors for LBP among seafood processing factory workers in Thailand including migrant workers. The subjects were Thai and Myanmar workers in the typical seafood processing factory. A cross-sectional study was carried out with a self-administered questionnaire. Prevalence of LBP, general characteristics, life style, and working condition were investigated. The associations between LBP and risk factors were estimated by multiple logistic regression models. Of 254 workers, 165 completed the questionnaire. Half of these workers were Thai, the others were from Myanmar. The point prevalence of LBP was 28.5%. Risk factors for LBP were age over 40 yr, poor health status, history of back injury, twisting posture at work, and slipping on wet floors. The results suggest that health promotion should focus on working conditions rather than individual life style in order to prevent LBP. Furthermore, greater attention to other risk factors such as history of back injury and perception of health status after regular health check up, especially in older age groups may be needed.

Background: Healthcare workers infected with Hepatitis B (HBV) or Hepatitis C virus (HCV) may undertake patient care activities if provider-to-patient transmission risks have been assessed in terms of viral load and clinical procedures. The present study investigated potential barriers to the acceptance of colleagues infected with HBV/HCV in healthcare settings after appropriate risk assessment. Methods: We conducted an anonymous, internet-based survey of Japanese nurses. Multivariate logistic analysis was used to assess factors associated with willingness to accept colleagues infected with HBV/HCV after risk assessment. Results: In total, 992 nurses responded to the survey, with 16% indicating that colleagues infected with HBV/HCV should not have patient contact after risk assessment. Willingness to accept HBV/HCV-infected colleagues was negatively associated with attitudes regarding the avoidance of contact with HBV/HCV-infected colleagues (OR: 0.49; 95% CI: 0.28-0.85). Previous professional contact with HBV/HCV patients (OR: 1.73; 95% CI: 1.36-2.12), experience of accidental injection from or personal exposure to HBV/HCV patients (OR: 2.00; 95% CI: 1.42-2.61), knowledge of HBV/HCV (OR: 2.00; 95% CI: 1.52-2.49), and female sex (OR: 1.60; 95% CI: 1.17-2.09) were positively associated with a willingness to accept HBV/HCV-infected colleagues. Conclusions: This study suggests that attitudes regarding the avoidance of contact with HBV/HCV-infected colleagues may be barriers to accepting these colleagues even after risk assessment has been performed. To protect the employment of nurses infected with HBV/HCV, employers should provide comprehensive education for nurses to reduce stigma and improve understanding about the management of staff infected with infectious diseases, such as HBV or HCV.

This study aimed to determine the prevalence and risk factors associated with respiratory symptoms. A cross-sectional study with random sampling method was employed and 300 home-based garment workers (HBGWs) were recruited. Risk factors, including personal factors; knowledge, health preventive behaviors, and skill of self-health surveillance, working condition, and respiratory symptoms were assessed. Data were collected using self-reported questionnaires. Prevalence of respiratory symptom was 22.3%. Majority of participants were female (78%). Mean age and working experience were 37.38 years (SD = 10.70) and 13.58 years (SD = 8.71), respectively. Allergic respiratory symptoms (odds ratio [OR] = 16.5; 95% confidence interval [CI] = 8.61-31.7) and garment dust exposure (OR = 12.3; 95% CI = 6.49-23.3) were significantly associated with respiratory symptoms (P < .001). Logistic regression analysis indicated history of allergic predicted the respiratory symptoms (OR = 12.96; 95% CI = 4.24-39.55). HBGWs who had serious allergic symptoms and high exposure to dust were at risk of respiratory symptoms. Therefore, preventive program for garment dust exposure among HBGWs is needed.

Motorcycle taxi drivers are directly exposed to air pollution in their work environment; therefore, their lung function might decrease more than that of enclosed vehicle taxi drivers, especially when exposed to ≥50 µg/m PM. World Health Organization (WHO) vehicular emission standards should be recognized and eventually enforced.

Heatstroke is defined as severe symptoms of heat-related illness, which could lead to death. Sugarcane farmers are at high risk of heatstroke under extremely hot outdoor working conditions. We explored the prevalence of heat-related illness symptoms and risk factors related to heat-related illness among sugarcane farmers working in the summer. We conducted a cross-sectional study using questionnaire interviews among 200 sugarcane farmers in Kamphaeng Phet Province, Thailand. The questionnaire addressed demographics, heat-related symptoms experienced during summer at work, and occupational factors. Bioelectrical impedance analysis was used to assess body mass index and body fat percentage. Watson formula equations were used to estimate total body water. The prevalence of heat-related illness symptoms was 48%; symptoms included heavy sweating, weakness/fatigue, dizziness, muscle cramps, headache, and vertigo. Factors associated with heat-related illness included women and clothing. Sugarcane farmers wearing two-layer shirts had a higher risk of heat-related illness. Farmers with fluid intake 3.1-5.0 liters per day had a 79% lower risk of heat-related illness. Our findings demonstrated that sugarcane farmers are at risk of heat-related illness. We confirmed that working conditions, including wearing proper clothing and water-drinking habits, can reduce this risk.

Musculoskeletal disorders (MSDs) are common in various occupations. However, there is still limited research about the prevalence of, and risk factors associated with, MSDs among oil palm harvesting workers in Thailand. To investigate the prevalence of MSDs and risk factors associated with MSDs in Thai oil palm harvesting workers, face-to-face interviews were conducted with Thai oil palm harvesting workers in Krabi Province, Thailand, using a questionnaire. The questionnaire consisted of four sections which included information on demographic characteristics, work-related characteristics, job stress, and MSDs. A total of 334 oil palm harvesting workers participated in the current study. The prevalence of MSDs during the past 12 months was 88.0%. Lower back MSDs had the highest (59.0%) 12-month prevalence among oil palm harvesting workers, followed by shoulder (37.1%) and neck (27.2%). Factors associated with lower back MSDs included type of task, heavy lifting, and job stress. Moreover, type of task, repetitive movement, and job stress were associated with shoulder and neck MSDs. The cutters had a higher risk of having shoulder and neck MSDs, primarily due to the fact that their work involved cutting the fresh fruit bunches from high up in the trees. The collectors had more back issues due to the heavy lifting. These findings showed the need to raise awareness, and to design guidelines and interventions to prevent MSDs in oil palm harvesting workers.

In Thailand, taxi drivers employed in the informal sector often experience hazardous working conditions. Previous studies revealed that elevated Hematocrit (HCT) is a predictor of cardiovascular disease (CVD) risk. This study assessed factors associated with HCT in taxi drivers to predict their occupational CVD risk factors. A cross-sectional study was conducted on 298 male taxi drivers who joined a health check-up campaign in Bangkok, Thailand. HCT and body mass index were retrieved from participant health check-up files. Self-administered questionnaires assessed demographics, driving mileage, working hours, and lifestyle. Statistical associations were analyzed using stepwise linear regression. Our results showed that obesity (p=0.007), daily alcohol drinking (p=0.003), and current or past smoking (p=0.016) were associated with higher HCT levels. While working hours were not directly associated with HCT levels in the current study, the effect on overworking is statistically arguable because most participants worked substantially longer hours. Our findings suggest that taxi drivers’ CVD risk may be increased by their unhealthy work styles. Initiatives to improve general working conditions for taxi drivers should take into account health promotion and CVD prevention. The policy of providing periodic health check-ups is important to make workers in the informal sector aware of their health status.

Objectives Safety at work is important for workers with low back pain (LBP). This requires good job design that considers both worker capacities and work requirements, a concept called “Fitness for Work.” This systematic review aimed to evaluate the effects of fitness for work interventions on workers with LBP. Methods We searched PubMed, the Cochrane Library, and Scopus from 2000 through 2020, using relevant terms. Results We reviewed nine randomized controlled trials (RCTs) out of 3052 unique references. All studies were RCTs conducted in Western countries. Some RCTs reported positive findings that fitness for work interventions were effective for LBP in facilitating shorter return to work time and reducing short‐term sick leave. However, the results of the reviewed studies were inconsistent; therefore, there is insufficient evidence to draw firm conclusions about the effectiveness of fitness for work interventions. Furthermore, the interventions were not effective in reducing long‐term sick leave over a 24‐month period. There were consistent findings that fitness for work interventions were no more effective than control interventions on pain intensity, disability, and work ability of workers with LBP. Conclusions These results suggest that fitness for work interventions may be somewhat effective in facilitating return to work and preventing short‐term recurrence in workers with LBP. However, workers need to carefully manage their condition to prevent long‐term recurrence.