Table 1.

Demographic data

	Patients undergoing THA younger than 65 years			Patients undergoing THA 65 years of age and older
Charnley class	A	B	C	A	B	C
Count (hips)	560	284	34	323	211	30
Female gender (%)	240 (43)	129 (45)	18 (53)	170 (53)	98 (46)	21 (70)
Mean age (years; range)	53.1 (15.8–64.9)	53.8 (19.3–64.8)	53.4 (29.0–64.7)	72.6 (65.0–91.1)	73.6 (65.0–90.3)	75.2 (65.3–88.7)
Mean body mass index ± SD	28.2 ± 5.9	27.7 ± 5.7	31.4 ± 7.1	26.8 ± 4.6	27.8 ± 5.8	25.9 ± 7.2
Mean followup ± SD (years)	8.7 ± 7.0	5.7 ± 6.7	2.5 ± 1.5	6.5 ± 4.1	4.1 ± 4.1	2.0 ± 1.0
Hips with preoperative EQ-5D (%)	119 (21)	115 (40)	18 (53)	52 (16)	88 (42)	18 (60)