Table 2.

Description of EQ-5D-Y-3L (self, proxy-proxy, and proxy-child) preference-weighted health states (overall and based on subgroups)

	EQ-5D-Y-3L (self)	EQ VAS (self)	EQ-5D-Y-3L (proxy-proxy)	EQ VAS (proxy-proxy)	EQ-5D-Y-3L (proxy-child)	EQ VAS (proxy-child)
Overall
N	85	83	85	85	85	85
Median (IQR)	1 (0.81–1)	90 (75–98)	0.84 (0.8–1)	90 (85–95)	1 (0.8–1)	90 (90–100)
Self vs. proxy difference (p value)			0.32	0.19	1	0.01a
Age group
6–7 years
N (%)	30 (0.35)	29 (0.34)	30 (0.35)	30 (0.35)	30 (0.35)	30 (0.35)
Median (IQR)	1 (0.76–1)	89 (74–97)	0.83 (0.8–1)	90 (82–95)	1 (0.8–1)	90 (80–95)
Self vs. proxy difference (p value)			0.78	0.49	0.79	0.48
8–10 years
N (%)	30 (0.35)	29 (0.34)	30 (0.35)	30 (0.35)	30 (0.35)	30 (0.35)
Median (IQR)	1 (0.76–1)	89 (74–97)	0.83 (0.8–1)	90 (82–95)	1 (0.8–1)	90 (80–95)
Self vs. proxy difference (p value)			0.78	0.49	0.79	0.48
11–12 years
N (%)	32 (0.38)	32 (0.38)	32 (0.38)	32 (0.38)	32 (0.38)	32 (0.38)
Median (IQR)	1 (0.83–1)	85 (72.5–93)	0.92 (0.8–1)	90 (77.5–95)	1 (0.8–1)	90 (89–96.5)
Self vs. proxy difference (p value)			0.09	0.15	0.43	0.01a
Long-term health condition/s
No
N (%)	59 (0.69)	58 (0.68)	59 (0.69)	59 (0.69)	59 (0.69)	59 (0.69)
Median (IQR)	1 (0.83–1)	89.5 (75–98)	1 (0.8–1)	90 (85–95)	1 (0.8–1)	90 (88–100)
Self vs. proxy difference (p value)			0.84	0.29	0.48	0.03a
Yes
N (%)	26 (0.31)	25 (0.29)	26 (0.31)	26 (0.31)	26 (0.31)	26 (0.31)
Median (IQR)	1 (0.76–1)	90 (75–95)	0.8 (0.73–1)	90 (81–95)	0.8 (0.73–1)	90 (90–100)
Self vs. proxy difference (p value)			0.18	0.47	0.3	0.21

VAS visual analogue scale, IQR interquartile range

^ap value significant at α = 0.05 for the Wilcoxon matched-pair signed-rank test. EQ-5D-Y-3L, EQ VAS proxy-proxy = Proxy version 1 report; EQ-5D-Y-3L, EQ VAS proxy-child = Proxy version 2 report