TABLE VII.

Comparison of Quality-of-Life Changes After Primary Total Hip Arthroplasty^*

			Preop.		2-Yr Postop.
	Population	Instrument	No. of Patients	QALY and Standard Deviation	No. of Patients	QALY and Standard Deviation	Change in QALY
Elmallah et al.12 (2017)	United States	SF-6D	194	0.614 ± 0.131	182	0.77 ± 0.14	0.185
Liebs et al.13 (2016)
Early aquatic cohort	Germany	SF-6D	129	0.556 ± 0.098	100	0.73 ± 0.146	0.164
Late aquatic cohort	Germany	SF-6D	141	0.554 ± 0.105	110	0.744 ± 0.122	0.181
Jenkins et al.14 (2013)	United Kingdom	EQ-5D	348	0.323 ± 0.32	NR†	0.721 ± 0.255	0.358
Fordham et al.15 (2012)	United Kingdom	SF-6D	938	0.537 ± 0.113	728	0.709 ± 0.159	0.166
Current study
EQ-5D cohort	United States	EQ-5D	5,353	0.63 ± 0.19	3,453	0.88 ± 0.14	0.25
SF-6D cohort	United States	SF-6D	5,154	0.68 ± 0.17	4,834	0.79 ± 0.13	0.18

^*QALY changes after total hip replacement in the current study as compared with recent studies.

^†NR = not reported.