“…To date, however, the study samples used in developing these prediction models have often included only a limited number of occupations (8,9,11,16,17), which may limit the generalizability of the results. Furthermore, while some of these studies used official records to assess sickness absence (8,9,11,14,16), others have relied only on self-reported sickness Airaksinen et al absence (10,12,13,15). The methods used to develop prediction models have also been heterogeneous.…”