TABLE 2.

Distribution of ICF categories and instrument occurrence per domain with example linkages. (Courtesy of LA Saketkoo, with permission, rights reserved)

ICF domain	Description	Instruments linked	No. of ICF categories linked	Examples from CTD-ILD and IPF core sets
Body Structure	Relates to involvement of anatomical structures	HRCT	1	s4301, Structure of lungs
Body Function	Relates to physical, mental and emotional functions including symptoms	D-12, DLCO, FVC, LCQ, MRC-DS, PF/IPF-PROM, K-BILD, LIPF, SF-36, SGRQ, UCSD-SOBQ	28	b1300, Energy level
				b134, Sleep functions
				b4402, Depth of respiration
				b455, Exercise tolerance
				b28011, Pain in chest
Activities and Participation	Execution of task or action; involvement in daily and overall life situation	D-12, LCQ, MRC-DS, PF/IPF-PROM, K-BILD, LIPF, SF-36, SGRQ, UCSD-SOBQ	71	d330, Speaking
				d430, Lifting, carrying objects, d4600, Moving around house
				d510, Washing oneself
				d8451, Maintaining a job
Environmental Factors	Positive (e.g. family, medications, assistive devices, oxygen, lifts) or Negative (e.g. stairs, lack of income, cold climate, distance from services) influences on performance	LCQ, K-BILD, LIPF, SGRQ	11	Products and technology for personal use in daily living e115_oxygen supplementation, Financial assets e1650, Tangible assets e1651, e260, Air quality e460, Societal attitudes
				e2100, Land forms, such as mountains, hills, valleys and plains
Total			111