Secular trends in work disability and its relationship to musculoskeletal pain and mental health : A time-trend analysis using five cross-sectional surveys (2002-2010) in the general population
Objectives: International evidence suggests that rates of inability to work because of illness can change over time. We hypothesised that one reason for this is that the link between inability to work and common illnesses, such as musculoskeletal pain and mental illness, may also change over time. We have investigated this in a study based in one UK district. Methods: Five population surveys (span