Elders, L.A.M.

study work ability health worker ability factor intervention risk factors group retirement disability association sickness absence determinant demand effect population subject environ table disorder occup turkish result scaffolder absence work ability index review difference dutch sickness period work demands life events turkish scaffolders model article score scavolder disability risk activity referent return end points information measure point work-related focus group interviews event follow-up education 12 months handling work-related factors netherland problem index focus number job demands tuomi compliance scand supervisor musculoskeletal regression disease characteristic interview search burdorf industry questionnaire scaffolding company relation increase material sustainability work-related determinants