Table 3.

Known-group validity of EQ-5D-5 L and SF-6D

	EQ-5D-5 L			SF-6D
Patient characteristics	Mean ± SD	P*	ES	Mean ± SD	P*	ES	RE
Patient types
Outpatient	0.75 ± 0.21	0.000	0.360	0.64 ± 0.14	0.000	0.230	1.57
Inpatient	0.35 ± 0.35			0.51 ± 0.1
Gender
Male	0.62 ± 0.33	0.174	0.010	0.6 ± 0.14	0.279	0.004	1.57
Female	0.57 ± 0.34			0.58 ± 0.14
Age
Age < =35	0.71 ± 0.24	0.000	0.110	0.63 ± 0.14	0.000	0.070	1.45
Age > 35	0.48 ± 0.38			0.55 ± 0.14
Location
City	0.6 ± 0.35	0.764	0.000	0.6 ± 0.15	0.584	0.001	0.30
Village	0.61 ± 0.31			0.58 ± 0.14
Education
< =Junior school	0.52 ± 0.36	0.02	0.040	0.56 ± 0.13	0.013	0.030	2.01
High school	0.58 ± 0.35			0.61 ± 0.15
> =college	0.68 ± 0.28			0.61 ± 0.14
Income
< 1000yuan	0.49 ± 0.36	0.000	0.1	0.54 ± 0.13	0.000	0.08	1.19
1001–3500yuan	0.51 ± 0.37			0.56 ± 0.14
3501-5000yuan	0.74 ± 0.24			0.66 ± 0.15
> 5000yuan	0.68 ± 0.29			0.61 ± 0.12
Duration of disease
< 4 Weeks	0.63 ± 0.36	0.247	0.003	0.62 ± 0.15	0.333	0.001	1.27
4–12 Weeks	0.65 ± 0.33			0.60 ± 0.14
> 12 Weeks	0.59 ± 0.33			0.58 ± 0.14
Genaral health (EQ-VAS)
Bad	0.44 ± 0.37	0.000	0.220	0.54 ± 0.14	0.000	0.170	1.29
Fair	0.65 ± 0.28			0.59 ± 0.11
Good	0.79 ± 0.19			0.65 ± 0.13
Excellent	0.76 ± 0.25			0.68 ± 0.14
General health (SF-36)
Very good¶	0.49	0.000	0.230	0.56	0.000	0.250	0.91
Good	0.77 ± 0.25			0.73 ± 0.15
Fair	0.74 ± 0.29			0.64 ± 0.13
Bad	0.63 ± 0.27			0.58 ± 0.12
Very bad	0.32 ± 0.38			0.49 ± 0.1

*P is from Mann-Whitney U-tests or Kruskal-Wallis H tests (2-tailed)

¶ only one person was in this group

EQ-5D-5 L 5-level EuroQol 5-dimension, SF-6D Short Form 6-dimension, SD Standard deviations, ES Effect size, RE Relative efficiency, EQ-VAS EuroQol visual analogue scale, SF-36 36-item Short Form Health Survey