BMC Musculoskeletal Disorders · 2016 · 18 citations · 28 references
Pain intensity and care-seeking due to musculoskeletal disorders did not seem to influence the association between the number of pain sites and later sickness absence. The number of musculoskeletal pain sites seems to be a strong risk factor for later sickness absence.
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The Danish Civil Registration System
Carsten Bøcker Pedersen · Scandinavian Journal of Public Health · 2011 · 4.5K citations
Does Low Participation in Cohort Studies Induce Bias?
Morten Frydenberg, Tine Brink Henriksen · Epidemiology · 2006 · 561 citations