Reliability, validity and responsiveness of the EQ-5D in assessing and valuing health status in patients with social phobia

Table 4 Reliability of the EQ VAS score and EQ-5D index scores anchored by no change of the LSAS total score

				Intraclass correlation coefficient
Time	Number of patients			EQ VAS score			EQ-5D index-G			EQ-5D index-UK
	All	SP	No SP	All	SP	No SP	All	SP	No SP	All	SP	No SP
t0 - t1 ( 6 m)	67	67		0.60**	-	-	0.33			0.45
t0 - t2 (12 m)	44	44		0.53**	-	-	0.56**			0.63**
t0 - t3 (18 m)	30	30		0.71**	-	-	0.59			0.51
t0 - t4 (30 m)	21	21		0.65	-	-	0.17			0.34
t1 - t2 ( 6 m)	181	106	75	0.66**	0.68*	0.58*	0.61**	0.74*	0.17	0.74**	0.78*	0.52*
t1 - t3 (12 m)	145	79	66	0.66**	0.68*	0.52*	0.47**	0.56*	0.06	0.65**	0.65*	0.38
t1 - t4 (24 m)	92	49	43	0.60**	0.65*	0.32	0.74**	0.77*	0.32	0.73**	0.73*	0.46
t2 - t3 ( 6 m)	169	94	75	0.83**	0.81*	0.82*	0.73**	0.72*	0.58*	0.79**	0.78*	0.69*
t2 - t4 (18 m)	104	54	50	0.60**	0.58*	0.59*	0.51**	0.50*	0.49*	0.62**	0.62*	0.55*
t3 - t4 (12 m)	111	60	51	0.72**	0.68*	0.75*	0.67**	0.65*	0.61*	0.78**	0.78*	0.60*

LSAS: Liebowitz Social Anxiety Scale; m: months; SP: Social Phobia. ** p ≤ 0.005; * p ≤ 0.008. No change of the LSAS total score was defined within the range of 0 ± 0.5 SD. Patients without social phobia had a LSAS total score <30 in both time points. In t0 there were no patients < 30 LSAS total score points.

ISSN: 1477-7525