Assessing responsiveness of the EQ-5D-3L, the Oxford Hip Score, and the Oxford Knee Score in the NHS patient-reported outcome measures

Table 6 Knee – the SRM, SES, and RI (with 95% CIs) for the OKS and the EQ-5D-3L (by the transition)

			Total	Much better	A little better	About the same	A little worse	Much worse
OKS [0, 48]	Change	N	191,379	138,407	31,650	8985	7029	4610
		(Post-op. mean)	34.9	38.8	28.0	22.7	20.2	13.7
		(Pre-op. mean)	19.1	19.6	18.1	17.7	18.3	16.7
		Mean (SD)	15.8 (9.8)	19.2 (8.0)	9.9 (7.1)	5 (6.8)	1.9 (6.7)	− 3.0 (7.0)
	Mean_{change score}/SD_{change score}		1.6 (1.6, 1.6)	2.4 (2.4, 2.4)	1.4 (1.4, 1.4)	0.7 (0.7, 0.8)	0.3 (0.3, 0.3)	− 0.4 (− 0.5, − 0.4)
	SRM [Eq. 1]		1.4 (1.4, 1.4)	2.1 (2.1, 2.1)	1.5 (1.5, 1.5)	0.8 (0.8, 0.9)	0.3 (0.3, 0.4)	− 0.5 (− 0.5, − 0.4)
	SES [Eq. 2]		2.5 (2.5, 2.5)	2.7 (2.7, 2.7)	1.7 (1.7, 1.7)	1.2 (1.2, 1.2)	1.0 (1.0, 1.0)	0.9 (0.8, 0.9)
	RI [Eq. 3]		0.7 (0.7, 0.7)
EQ-5D-3L [− 0.59, 1]	Change	N	180,546	130,838	29,888	8434	6569	4243
		(Post-op. mean)	0.7	0.8	0.6	0.5	0.4	0.2
		(Pre-op. mean)	0.4	0.4	0.4	0.4	0.4	0.3
		Mean (SD)	0.3 (0.3)	0.4 (0.3)	0.2 (0.3)	0.1 (0.3)	0.1 (0.3)	− 0.1 (0.4)
	Mean_{change score}/SD_{change score}		1.0 (0.9, 1.0)	1.2 (1.2, 1.2)	0.8 (0.8, 0.8)	0.4 (0.4, 0.5)	0.2 (0.1, 0.2)	− 0.4 (− 0.4, − 0.4)
	SRM [Eq. 1]		0.8 (0.8, 0.9)	1.0 (1.0, 1.1)	0.8 (0.7, 0.8)	0.5 (0.4, 0.5)	0.2 (0.1, 0.2)	− 0.4 (− 0.4, − 0.4)
	SES [Eq. 2]		1.3 (1.3, 1.3)	1.4 (1.4, 1.4)	1.2 (1.2, 1.2)	1.3 (1.3, 1.3)	1.2 (1.2, 1.2)	1.2 (1.2, 1.3)
	RI [Eq. 3]		0.3 (0.3, 0.3)

ISSN: 1749-799X