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Table 1 Sample characteristics of the Catalan Health Interview Survey (2011–2012)

From: Head-to-head comparison between the EQ-5D-5L and the EQ-5D-3L in general population health surveys

  n (%) Unweighted n (%) Weighted SEa Design effect
Gender
 Male 3791 (50.2%) 3877 (49.1%) 0.20 0.19
 Female 3763 (49.8%) 4014 (50.9%) 0.20 0.19
Age group
 18–44 years 3527 (46.7%) 3801 (48.2%) 0.45 0.62
 45–64 years 2259 (29.9%) 2436 (30.9%) 0.76 2.08
 65–74 years 753 (10.0%) 784 (9.9%) 0.33 0.92
 75 years and over 1015 (13.4%) 870 (11.0%) 0.29 0.53
Studies level
 Primary or less 2015 (26.7%) 1993 (25.3%) 2.19 18.52
 Secondary 4179 (55.4%) 4345 (55.1%) 1.65 8.31
 University or more 1356 (18.0%) 1548 (19.6%) 3.44 60.70
Social class
 I-II (managerial and free-lance professionals) 1312 (18.0%) 1485 (19.5%) 2.83 40.90
 III (skilled non-manual occupations) 2226 (30.6%) 2390 (31.3%) 2.36 19.84
 IV (skilled manual workers) 3067 (42.2%) 3052 (40.0%) 4.71 68.95
 V (non-skilled manual workers) 671 (9.2%) 701 (9.2%) 0.59 3.18
Perceived health
 Excellent 564 (7.5%) 636 (8.1%) 0.82 7.41
 Very good 1895 (25.1%) 2067 (26.2%) 1.64 10.84
 Good 3388 (44.9%) 3452 (43.7%) 2.08 13.25
 Fair 1356 (18.0%) 1374 (17.4%) 0.48 1.20
 Poor 351 (4.7%) 362 (4.6%) 0.41 2.82
Activity limitation
 Yes, seriously affected 398 (5.3%) 397 (5.0%) 0.33 1.60
 Yes, limited but not seriously 762 (10.1%) 786 (10.0%) 0.63 3.33
 No 6394 (84.6%) 6708 (85.0%) 0.85 4.19
Number of chronic physical conditions
 None 1690 (22.4%) 1783 (22.6%) 1.60 11.21
 1 condition 1183 (15.7%) 1256 (15.9%) 0.55 1.75
 2 conditions 981 (13.0%) 1017 (12.9%) 0.50 1.66
 3 or 4 conditions 1432 (19.0%) 1526 (19.3%) 0.47 1.07
 5 or more conditions 2268 (30.0%) 2308 (29.2%) 1.36 6.68
VAS (mean, SD) 7554 73.19 (19.21) 0.42 5.21
  1. aStandard error was estimated by the Taylor series method