Table 3.

Differences in utility values

Difference in pair	n	Mean	SD	t	df	p	95 % CI
Original versus alternative	3762	0.036	0.051	43.926	3761	0.000	0.035, 0.038
Original versus 5 SDQ subscales	3762	0.001	0.116	0.402	3761	0.688	−0.003, 0.004
Original versus 3 SDQ subscales	3762	0.010	0.115	5.360	3761	0.000	0.006, 0.014
Alternative versus 5 SDQ subscales	3762	−0.036	0.136	−16.10	3761	0.000	−0.040, −0.031
Alternative versus 3 SDQ subscales	3762	−0.026	0.135	−12.022	3761	0.000	−0.031, −0.022
5 SDQ versus 3 SDQ subscales	3762	0.009	0.011	53.209	3761	0.000	0.009, 0.010