Table 3.

Baseline, 1-year follow-up, and change in Harris Hip Score in patients undergoing primary and revision total hip replacement (THR)

	All THR			Primary THR			Revision THR
	Baseline mean	1-year mean	Change (CI)	Baseline mean	1-year mean	Change (CI)	Baseline mean	1-year mean	Change (CI)
Overall	48	91	43 (42-43)	48	91	43 (43-43)	56	87	31 (29-33)
Educational level
Low	47	90	43 (43-43)	47	90	43 (43-43)	55	86	31 (28-34)
Medium	50	92	42 (42-42)	50	92	42 (42-43)	57	87	30 (27-34)
High	51	93	42 (41-42)	51	93	42 (41-42)	60	92	32 (27-38)
Cohabiting status
Alone	46	89	43 (42-43)	46	89	43 (43-44)	56	85	29 (25-33)
Cohabiting	49	92	43 (42-43)	49	92	43 (42-43)	56	88	32 (29-34)
Other	49	91	42 (42-43)	48	91	43 (42-44)	56	90	34 (25-43)
Family wealth
Low	46	89	43 (43-44)	46	89	43 (44-44)	55	86	31 (28-35)
Medium	48	91	43 (42-43)	48	91	43 (43-43)	53	86	33 (29-36)
High	51	93	42 (42-42)	51	93	42 (42-43)	60	88	28 (26-32)