Concepts not appropriately classifiable with ICF categories were labeled as specification categories (i.e. context-specific additions) and were assigned to predefined specification areas (i.e. precision, coverage, personal factors, and broad concepts).
454 different specification categories were identified.
Forty-three specategories categories for CWP and fifty-two for LBP reports passed the threshold.
The specification categories were assigned to the four specification areas precision, coverage, personal factors and broad concepts.
The percentage agreement between the two coders was 78.7% for the ICF categories and 78.8% for the specification categories in the reports.
Relevant specification categories for medical evaluations of work capacity involving CWP and LBP were determined by calculating their relative frequency across reports and setting a relevance threshold.
Table 2 provides examples and definitions for the different types of specification categories.> We assigned the categories to the four specification areas precision, coverage, personal factors and broad concepts (see Table 2).
Overall, 5,146 codings for specification categories and 5,482 for third and fourth level ICF categories were assessed as limitations, barriers or facilitators and thus included in the relevance analysis.
The relevance analysis only included specification categories and third or fourth level ICF categories assessed as limitations, barriers or facilitators and thus assumed to influence the claimant's functioning.
Table 3 displays the codings' frequencies for the different types of specification categories and specification areas.> Of the 24,396 (100%) codings referring to ICF categories, 8,413 (34.5%) were coded on the second, 13,810 (56.6%) on the third and 2,173 (8.9%) on the fourth level.
