Table 5 Discriminant validity of the World Health Organization Quality of Life (WHOQOL-100) questionnaire: Domain differences between healthy and total patient group participants (Independent samples t- test)
WHOQOL domains | Healthy (n = 67) | Total patient group (mentally/physically ill; n = 358) | t-test | p value |
|---|---|---|---|---|
Physical health | 76.27 (13.07) | 60.62 (17.49) | -4.44 | 0.00 |
Psychological health | 69.99 (12.00) | 61.93 (15.90) | -3.58 | 0.00 |
Social relationships | 72.57 (14.00) | 61.42 (17.83) | -4.84 | 0.00 |
Environment | 57.07 (11.39) | 59.10 (12.87) | 1.20 | NS |
Overall QoL/health | 69.12 (15.14) | 54.97 (21.12) | -5.47 | 0.00 |