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Table 1 Descriptive statistics at baseline and 12 month follow-up

From: A comparison of four different approaches to measuring health utility in depressed patients

Characteristic EQ-5D-3L EQ-5D VAS SF-6D SF-12 new algorithm
  (n=395) (n=394) (n=393) (n=393)
Age     
mean (SD) 50.0 (11.6) 50.0 (11.6) 49.9 (11.6) 49.9 (11.6)
Gender     
Female n (%) 293 (74.2%) 293 (74.4%) 291 (74.1%) 291 (74.1%)
Male n (%) 102 (25.8%) 101 (25.6%) 102 (25.9%) 102 (25.9%)
Suffered from depression in the past     
Yes 353 (89.4%) 352 (89.3%) 351 (89.3%) 351 (89.3%)
No 42 (10.6%) 42 (10.7%) 42 (10.7%) 42 (10.7%)
Duration of current episode of depression     
<2 years 95 (24.1%) 95 (24.1%) 94 (23.9%) 94 (23.9%)
1-2 years 70 (17.7%) 70 (17.8%) 70 (17.8%) 70 (17.8%)
>2 years 230 (58.2%) 229 (58.1%) 229 (58.3%) 229 (58.3%)
BDI score at baseline     
mean (SD) 31.3 (10.4) 31.3 (10.4) 31.2 (10.4) 31.2 (10.4)
BDI score at 12 months     
mean (SD) 19.3 (13.6) 19.3 (13.7) 19.2 (13.5) 19.2 (13.5)
Health utility score at baseline*     
mean (SD) 0.55 (0.31) 0.51 (0.20) 0.56 (0.11) 0.57 (0.08)
Health utility score at 12 months     
mean (SD) 0.60 (0.35) 0.59 (0.25) 0.62 (0.16) 0.62 (0.14)
  1. *n=390 for the SF-6D and SF-12 new algorithm for this variable.