Table 2.

Description of PROM^a

PROM Instrument	No. of Items	Health Domains Assessed	PROM Instrument	Number of Items	Health Domains Assessed
PROMIS PF-CAT	4-10	PF	PROMIS PF-CAT	4-10	PF
SF-36	36	Includes subscales of PF, pain, general health, vitality, mental health, and social functioning	EQ-5D	6	QOL
SF-36 PF	10	PF	AKPS	13	Symptoms and function
KOOS	43	Includes subscales of symptoms, ADL, Sports/Recreation, and QOL	Marx	4	Activity
KOOS ADL	17	Function in daily living	SF-36
KOOS Sports/Recreation	5	Function in sport and recreation	PF	10
WOMAC	Calculated from KOOS	Pain and stiffness	Physical limitations	4
EQ-5D	6	Overall function	Emotional limitations	3
AKPS	13	Symptoms and function	Energy	4
Marx	4	Activity	Emotional well-being	5
			Social functioning	2
			General health	5
			Pain	2
			KOOS
			Pain	9
			Symptoms	7
			ADL	17
			Sports/Recreation	5
			QOL	4

^aADL, Activities of Daily Living; AKPS, Anterior Knee Pain Scale; CAT, computer adaptive test; EQ-5D, EuroQol-5 dimensions; KOOS, Knee injury and Osteoarthritis Outcome Score; Marx, Marx Activity Rating Scale; PF, physical function; PROM, patient-reported outcome measure; PROMIS, Patient-Reported Outcome Measurement Information System; QOL, Quality of Life; SF-36, 36-Item Short Form Health Survey; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.