Table 3. Patient-reported outcomes, 6 and 12 months after surgery, respectively*.

	Intervention	Control	Effect r	p value	Adjusted p value	Intervention	Control	Effect r	p value	Adjusted p value
	6 months	6 months	6 months	6 months	6 months	12 months	12 months	12 months	12 months	12 months
Pain VAS	1.0	1.0	0.07	0.402	1.000	0.0	0.0	0.15	0.098	0.882
	(0.0; 2.0)	(0.0; 2.0)				(0.0; 1.0)	(0.0; 2.0)
WOMAC Pain	95.0	92.5	0.14	0.113	1.000	100.0	95.0	0.27	0.003	0.023
	(90.0; 100.0)	(90.0; 100.0)				(95.0; 100.0)	(90.0; 100.0)
WOMAC Stiffness	87.5	87.5	0.00	0.960	1.000	87.5	100.0	0.08	0.373	1.000
	(75.0; 100.0)	(75.0; 100.0)				(75.0; 100.0)	(75.0; 100.0)
WOMAC ADL	92.7	92.6	0.03	0.522	1.000	95.6	95.6	0.11	0.214	1.000
	(85.2; 95.6)	(89.7; 95.6)				(89.7; 100.0)	(92.7; 97.1)
WOMAC Total	92.7	92.7	0.01	0.943	1.000	95.8	95.8	0.10	0.523	1.000
	(86.5; 95.8)	(85.4; 96.9)				(91.7; 100.0)	(88.5; 96.9)
Harris Hip Score	93.0	95.0	0.12	0.171	1.000	96.0	96.0	0.08	0.384	1.000
	(86.0; 96.0)	(88.0; 96.0)				(93.0; 98.0)	(90.0; 97.0)
UCLA Activity Scale	7.0	7.0	0.14	0.112	1.000	7.0	7.0	0.18	0.042	0.378
	(6.0; 7.0)	(6.0; 7.0)				(7.0; 7.0)	(6.0; 7.0)
EQ-5D index	1.00	0.89	0.25	0.004	0.036	1.00	1.00	0.14	0.099	0.891
	(0.89; 1.00)	(0.89; 1.00)				(0.89; 1.00)	(0.89; 1.00)
EQ-5D VAS	85.0	85.0	0.01	0.899	1.0000	90.0	85.0	0.13	0.149	1.000
	(80.0; 90.0)	(75.0; 90.0)				(80.0; 90.0)	(70.0; 90.0)

* In the Intervention and Control columns, the median and, in brackets, the 25^th and 75^th percentiles are listed.

ADL, activities of daily living; EQ-5D, health-related quality of life questionnaire; Harris Hip score, functional evaluation of hip;

UCLA Activity Scale, activity scale of the University of California, Los Angeles; VAS, visual analog scale; WOMAC, Western Ontario and McMaster Universities Osteoarthritis index