Table 3.
Known-group validity of the three instruments within different health groups (N = 1000)
| N (%) | CHROME-G | EQ-5D-5L | SF-6Dv2 | ||||
|---|---|---|---|---|---|---|---|
| Mean (SD) | ES (95% CI) | Mean (SD) | ES (95% CI) | Mean (SD) | ES (95% CI) | ||
| Self-reported health states | 3.416 (2.521, 4.302) | 3.325 (2.435, 4.208) | 2.228 (1.378, 3.072) | ||||
| Very good | 169 (16.9%) | 15.94 (4.81) | 5.76 (1.92) | 9.88 (4.56) | |||
| Good | 407 (40.7%) | 18.11 (4.03) | 6.12 (1.51) | 12.84 (4.13) | |||
| Fair | 362 (36.2%) | 22.15 (4.61) | 7.63 (2.05) | 15.80 (3.04) | |||
| Poor | 56 (5.6%) | 27.45 (6.59) | 10.23 (2.97) | 18.64 (2.94) | |||
| Very poor | 6 (0.6%) | 33.00 (9.27) | 12.5 (4.18) | 20.17 (6.34) | |||
| EQ-VAS score in EQ-5D-5L | 2.410 (2.102, 2.716) | 2.712 (2.394, 3.028) | 1.846 (1.554, 2.137) | ||||
| ≥ 90 | 437 (43.7%) | 16.83 (4.22) | 5.76 (1.58) | 11.29 (4.40) | |||
| 80–89 | 289 (28.9%) | 20.57 (4.38) | 6.96 (1.64) | 14.77 (3.14) | |||
| 70–79 | 147 (14.7%) | 21.56 (4.56) | 7.41 (1.84) | 15.38 (3.91) | |||
| 60–69 | 66 (6.6%) | 25.00 (5.17) | 9.18 (2.49) | 17.39 (2.73) | |||
| < 60 | 61 (6.1%) | 27.87 (6.65) | 10.66 (2.97) | 19.11 (2.75) | |||
| Number of self-reported chronic diseases | 1.348 (1.139, 1.556) | 1.362 (1.153, 1.571) | 1.097 (0.892, 1.301) | ||||
| 0 | 571 (57.1%) | 5.75 (1.21) | 6.15 (1.86) | 12.18 (4.68) | |||
| 1 | 183 (18.3%) | 6.51 (1.36) | 7.24 (2.16) | 15.16 (3.40) | |||
| 2 | 125 (12.5%) | 7.03 (1.45) | 7.66 (1.97) | 15.92 (3.01) | |||
| ≥ 3 | 121 (12.1%) | 7.51 (1.75) | 8.93 (2.71) | 17.03 (2.95) | |||
Non-parametric Kruskal–Wallis H test indicated that the differences in the level sum score between the self-reported health states, EQ-VAS scores (from the EQ-5D-5L) and number of self-reported chronic diseases of the three instruments are all statistically significant (p < 0.001)
SD Standard deviation, ES Effect size