Table 1.

Description of EQ-5D-UK, EQ-5D-SW and GHQ-12 (Total sample, n = 32,548)

EQ-5D-UK: Possible values: −0.59 (poorest health) to 1 (best health)
Missing: 8.0 % (n = 2602)
Mean (SD)	0.80 (0.22)
Median (range)	0.80 (−0.59 to 1)
% Floor (−0.59)	0.03 % (n = 10)
% Ceiling (1)	33.4 % (n = 10,003)
EQ-5D-SW: Possible values: 0.34 (poorest health) to 0.97 (best health)
Missing: 8.0 % (n = 2602)
Mean (SD)	0.90 (0.09)
Median (range)	0.93 (0.34–0.97)
% Floor	0.03 % (n = 11)
% Ceiling	33.4 % (n = 10,002)
GHQ-12: Possible values: 12 (poorest health) to 0 (best health)
Missing: 3.1 % (n = 1008)
Mean (SD)	1.10 (2.42)
Median (range)	0 (0 to 12)
% Floor (12)	0.9 % (n = 290)
% Ceiling (0)	71.2 % (n = 22,448)