Aspects of functioning and environmental factors in medical work capacity evaluations of persons with chronic widespread pain and low back pain can be represented by a combination of applicable ICF Core Sets

Table 4 Coverage and efficiency ratios of the different ICF Core Sets for the CWP-reports (n = 50) and the two relevance thresholds

	Number of overlapping categories	Coverage ratio (%)	Efficiency ratio (%)
Relevance threshold ≥ 25% (m = 76)
CWP Brief (k = 24)	22	29	92
CWP Comprehensive (k = 67)	41	54	61
LBP Brief (k = 35)	29	38	83
LBP Comprehensive (k = 78)	43	57	55
Depression Brief (k = 26†)	19	25	73
Depression Comprehensive (k = 90†)	43	57	48
CWP + LBP + Depression Brief (k = 53*)	37	49	70
CWP + LBP + Depression Comprehensive (k = 131*)	62	82	47
Relevance threshold ≥ 50% (m = 37)
CWP Brief (k = 24)	19	51	79
CWP Comprehensive (k = 67)	29	78	43
LBP Brief (k = 35)	21	57	60
LBP Comprehensive (k = 78)	26	70	33
Depression Brief (k = 26†)	14	38	54
Depression Comprehensive (k = 90†)	26	70	29
CWP + LBP + Depression Brief (k = 53†*)	29	78	55
CWP + LBP + Depression Comprehensive (k = 131†*)	36	97	27

Note: m = total number of ranked categories above the respective threshold; k = total number of categories in the respective ICF Core Set; † = categories aggregated on the second level (expect categories only available on the third level in the Comprehensive ICF Core Set); * = adjusted for overlap between the categories of the three ICF Core Sets.

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