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Table 10 Construct and concurrent validity of WHOQOL-DIS for people with intellectual disabilities

From: The World Health Organization Quality of Life instrument for people with intellectual and physical disabilities (WHOQOL-Dis): evidence of validity of the Brazilian version

Factor/domain Do you have a disability [impairment or limitation]? Depression (BDI-II) (stratified by quantils) Satisfaction with life (SWLS) (stratified by quantils)
Yes (n = 94) No (n = 61) df = 153 ≤ 5 (n = 72) ≥ 6 (n = 83) df = 153 ≤ 30 (n = 73) ≥ 31 (n = 83) df = 154
Mean (SD) Mean (SD) t d Mean (SD) Mean (SD) t d Mean (SD) Mean (SD) t d
Physical(a) 52,09 (8,89) 54,81 (8,75) −1,87* 0,15 56,35 (6,89) 50,3 (9,55) 4,56** 0,35 50,49 (10,16) 55,42 (6,88) −3,5* 0,27
Psychological(a) 48,98 (8,35) 50,14 (8,44) −0,84 0,07 52,78 (5,89) 46,44 (9, 14) 5,2** 0,39 47,09 (9,36) 51,41 (6,83) −3,25** 0,25
Social(a) 39,89 (11,39) 40,44 (10,85) −0,3 0,02 43,29 (9,65) 37,05 (12,09) 3,57** 0,28 35,62 (12,29) 43,67 (9,07) −4,61** 0,35
Environment(a) 38 (9,27) 39,34 (9,87) −0,86 0,07 40,28 (8,61) 36,86 (10,01) 2,26* 0,18 34,59 (10,3) 41,91 (7,19) −5,08** 0,38
Overall(a) 77,79 (24,26) 85,25 (21,83) −1,94* 0,15 84,72 (20,15) 76,96 (25,93) 2,09* 0,17 72,43 (27,56) 87,65 (16,62) −4,11** 0,31
Factor1(b) 74,02 (14,86) 81,01 (14,04) −2,92* 0,23 80,67 (14,59) 73,29 (14,54) 3,15** 0,25 73,74 (13,3) 79,12 (16,01) −2,26* 0,18
Factor2(b) 31,91 (15,25) 31,97 (14,92) −0,02 0,00 34,72 (13,92) 29,22 (15,53) 2,31* 0,18 27,28 (14,52) 35,94 (14,37) −3,74** 0,29
Factor3(b) 39,01 (10,2) 40,85 (10,48) −1,08 0,09 42,07 (8,04) 37,4 (11,62) 2,94* 0,23 35,9 (11,47) 42,92 (7,99) −4,38** 0,33
Overall(b) 13,36 (8,91) 18,34 (8,9) −3,4** 0,27 16,67 (8,39) 14,01 (9,79) 1,8* 0,14 13,18 (9,05) 17,09 (9) −2,7* 0,21
DISQOL Module 45,99 (8,83) 48,67 (8,85) −1,84* 0,15 49,88 (8,04) 44,33 (9,01) 4,02** 0,31 43,21 (8,66) 50,23 (7,93) −5,28** 0,39
Local Module 38,7 (10,5) 38,63 (10,36) 0,04 0,00 40,71 (9,26) 36,59 (11,05) 2,49* 0,20 35,36 (11,33) 41,42 (8,71) −3,7** 0,29
  1. (a)WHOQOL-Bref. (b)DISQOL Module: factors congruent to the ones found in the cross-cultural project (global sample).
  2. Levels of significance: *p < 0.05; **p ≤ 0.001. df = degrees of freedom; d = effect size.