title: An examination of concepts in vocational rehabilitation that could not be linked to the ICF based on an analysis of secondary data.
abstract: BACKGROUND
  In the last few years the International Classification of Functioning, Disability and Health (ICF) has become a widely known and useful reference classification in vocational rehabilitation. It would be equally important to know which aspects of work-related health information cannot be assigned to distinct ICF categories.
  
  
  OBJECTIVE
  The objective of this study is to examine the concepts derived from three studies conducted within the ICF Core Set for vocational rehabilitation project, which could not be linked to distinct ICF codes in order to complement the current understanding of functioning in vocational rehabilitation.
  
  
  METHODS
  Secondary data analysis of the concepts from the systematic literature review, expert survey and patient focus group study of the ICF Core Set for vocational rehabilitation project that were marked as nd = not definable, nc = not covered or pf = personal factor. Nd-concepts were assigned to the biopsychosocial model of the ICF; additional ICF categories were formulated where needed. Nc-concepts were grouped into common themes not covered by the ICF. Pf-categories were linked to a proposed personal factors classification.
  
  
  RESULTS
  1093 nd-concepts were matched to overarching terms in the ICF, and "other specified"-categories were detailed. 1924 pf-concepts were linked to 31 second level categories of a proposed personal factors classification. 441 nc-concepts were grouped into six themes including the concept of well-being and attributes related to processes and time.
  
  
  CONCLUSIONS
  With concepts that emerged from the secondary analysis of data gathered during the vocational rehabilitation ICF Core Set project, we have enriched the ICF model with constructs specific to vocational rehabilitation. However, additional research is needed to further explore personal factors specific to vocational rehabilitation. The influence of themes complementary to the ICF such as well-being and quality of life on return-to-work should be further investigated.
authors.affiliation: Swiss Paraplegic Research (SPF), Nottwil, Switzerland.|ICF Research Branch in cooperation with the WHO Collaborating Centre for the Family of International Classifications in Germany (at DIMDI), Nottwil, Switzerland.|Caphri Research School, Maastricht University, Maastricht, The Netherlands.
authors.forename: Monika
authors.initials: M
authors.lastname: Finger
authors.affiliation: Caphri Research School, Maastricht University, Maastricht, The Netherlands.|Department of Epidemiology and Institute for Education, Maastricht University, Maastricht, The Netherlands.
authors.forename: Robert
authors.initials: R
authors.lastname: de Bie
authors.affiliation: Swiss Paraplegic Research (SPF), Nottwil, Switzerland.|ICF Research Branch in cooperation with the WHO Collaborating Centre for the Family of International Classifications in Germany (at DIMDI), Nottwil, Switzerland.
authors.forename: Melissa
authors.initials: M
authors.lastname: Selb
authors.affiliation: Swiss Paraplegic Research (SPF), Nottwil, Switzerland.|ICF Research Branch in cooperation with the WHO Collaborating Centre for the Family of International Classifications in Germany (at DIMDI), Nottwil, Switzerland.|Department of Rehabilitation and Movement Science, University of Vermont, Burlington, VT, USA.
authors.forename: Reuben
authors.initials: R
authors.lastname: Escorpizo
mesh_terms: D004185:Disability Evaluation; D006233:Persons with Disabilities / Q000534:rehabilitation* / Q000706:statistics & numerical data; D017144:Focus Groups; D006801:Humans; D012050:Rehabilitation, Vocational / Q000379:methods / Q000592:standards* / Q000706:statistics & numerical data; D062707:Return to Work / Q000706:statistics & numerical data; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires
keywords: International Classification of Functioning; content validity; disability and health; environmental factors; personal factors; return-to-work; vocational rehabilitation