Prevalence of musculoskeletal pain and associated disability in three cohorts of Brazilian workers
基于CUPID国际研究，调查巴西护理人员、甘蔗收割工和视频终端操作员三类职业人群的肌肉骨骼疼痛患病率及工作缺勤情况，发现不同工种疼痛部位和缺勤率存在显著差异。
<h3>Objectives</h3> Musculoskeletal disorders are a major cause of disability and incapacity for work in developed countries, but less is known about their frequency in developing countries. This study aimed to assess the prevalence of musculoskeletal symptoms and associated disability in three occupational populations in Brazil, as part of the multi-national CUPID study. <h3>Methods</h3> The target population comprised 200 nursing staff (NS), 300 sugar cane cutters (SCC), and 300 video terminal operators (VTO). With approval from the local Ethics Committee and after obtaining written informed consent, data were collected from participants at interview, using the standardised CUPID questionnaire. The prevalence of health outcomes between occupational groups was assessed by the χ<sup>2</sup> test. <h3>Results and conclusions</h3> In total, 666 (83.3%) subjects answered the questionnaire: 96% of the NS, 60.6% of the SCC and 97.3% of VTO. Most subjects were female (83.2%), 41.4% of them were less than 41 years old. Overall, 55.8% of participants reported low back pain in the past year, 43.1% neck pain, 42.3% shoulder pain, 18.9% elbow pain, 36.4% wrist/hand pain, and 28.9% knee pain. There were significant differences between occupational groups in the 12-month prevalence of pain in the back, neck, wrist, elbow and knee (p<0.001). Similarly, differences were observed in the one-month prevalence of pain in the back and neck (p<0.001), shoulder (p=0.005), elbow (p=0.004), wrists (p=0.026), and knees (p=0.056). The VTO reported musculoskeletal symptoms more frequently, but the NS and SCC registered more absence from work because of musculoskeletal pain.