Table 2.

Research designs of the included studies.

Design	Number of studies Data n = 226 Relevance level 5	Number of studies Data n = 51 Relevance level 6
Systematic or scoping review	39	9
Association of factors (for example regression analysis, latent class analysis)	72	14
Qualitative study (for example content analysis, phenomenological study, qualitative descriptive or case study)	48	10
ICF core set development and/or validation	20	11
Theoretical papers or recommendations	20	5
Quantitative descriptive/ cross-sectional study	14	3
Development and/or validation of measures	7
Delphi study	4
Other (Development of treatment, study protocol)	2