Comparing the contents of patient-reported outcome measures for fatigue: EORTC CAT Core, EORTC QLQ-C30, EORTC QLQ-FA12, FACIT, PRO-CTCAE, PROMIS, Brief Fatigue Inventory, Multidimensional Fatigue Inventory, and Piper Fatigue Scale

Table 3 Overview of the ICF codings of the PROMs under investigation

	EORTC CAT Core Fatigue	EORTC QLQ-FA12	EORTC QLQ-C30 Fatigue	PROMIS Item Bank – Fatigue	FACIT Fatigue	BFI	MFI-20	NCI PRO-CTCAE	PFS-12
Items in scale	34	12	3	54	13	10	20	2	12
Items covered by ICF	34	12	3	54	13	10	12	2	12
Unique first-level categories	8	3	1	10	6	5	4	2	3
Unique second-level categories	15	5	1	17	8	7	7	2	7
Unique third-level categories^a	17	5	1	22	10	8	8	2	7
Number of third-level codings assigned^a	50	14	3	91	20	17	14	3	15
Number of codings as not covered (nc) or not defined (nd)	2	0	0	0	0	0	8	0	0

^aIf no third level category was available, the number of second level categories was counted. Codings as not covered (nc) or not definable (nd) were not included in this count

ISSN: 1477-7525