Table 1.

Overview of the health-related quality of life assessment instruments.

Instrument	Description	Scale
EQ-5D domains∗	(i) Subject report, addressing 5 questions:	0-1 points
	(a) Mobility	(Worst to best)
	(b) Self-care
	(c) Usual activities
	(d) Pain/discomfort
	(e) Anxiety/depression
EQ-5D VAS	(i) Vertical 20 cm used to score the patient's health perception	100 representing the best and 0 the worst health
SF-36 domains∗	(i) Patient report, 36 items	0–100 mm
	(a) Physical functioning	(Worst to best)
	(b) Role-Physical
	(c) Bodily Pain
	(d) General health
	(e) Vitality
	(f) Role-emotional
	(g) Social functioning
	(h) Mental health
SF-36 PCS and MCS scores	(i) calculated based upon domain scores	Normative value: mean = 50, SD = 10
SF-6D∗	(i) Patient report, 11 items	0-1 points
	(a) Physical functioning
	(b) Role participation (RP and RE)
	(c) Bodily pain
	(d) Vitality
	(e) Mental health

^∗Based on transformed scale scores. Abbreviations: HRQoL = health-related quality of life; MCS = mental component summary; PCS = physical component summary; SF-36 = 36-Item Short-Form Health Survey version 2; EQ-5D = EuroQol-five dimensions; SF-6D = Short-Form-six dimensions.