Table 6.

PROM results for responders

	IF	HA		THA
	(n = 259)	(n = 148)	p-valuea	(n = 142)	p-valueb
Mean (SD) patient satisfaction (VAS)
At 4 months	35 (25)	24 (22)	< 0.001	20 (19)	< 0.001
At 12 months	32 (24)	28 (25)	0.2	23 (24)	< 0.001
Mean (SD) pain (VAS)
At 4 months	33 (23)	24 (20)	< 0.001	19 (20)	< 0.001
At 12 months	28 (23)	24 (22)	0.09	20 (22)	0.002
Mean (SD) EQ-5D index score
At 4 months	0.60 (0.24)	0,64 (0.24)	0.1	0.71 (0.23)	< 0.001
At 12 months	0.69 (0.24)	0.68 (0.27)	0.9	0.74 (0.24)	0.03
Mean (SD) EQ-VAS
At 4 months	67 (22)	68 (23)	0.6	73 (20)	0.01
At 12 months	73 (23)	69 (23)	0.2	73 (22)	0.9

^aStudent’s t-test (IF versus HA)

^bStudent’s t-test (IF versus THA)