ObjectiveTo study the performance of a developed job exposure matrix (JEM) for the assessment of psychosocial factors at work in terms of accuracy. possible misclassification bias and predictive ability to detect known associations with depression and low back pain (LBP). Materials and methodsWe utilized two large population surveys (the Health 2000 Study and the Finnish Work and Heal... https://annekleiners.shop/product-category/protection-plan/