Table 3.
Known groups validity – APACHE II scores
| APACHE score < =26 mean (SD) | APACHE score < =26 n | APACHE score >26 Mean (SD) | APACHE score >26 n | Difference | P value | Confidence intervals | Cohen’s D | ||
|---|---|---|---|---|---|---|---|---|---|
| EQ-5D-3 L (Utility) | 0.61 (0.35) | 195 | 0.47 (0.40) | 28 | 0.14 | 0.058 | −0.05 | 0.28 | 0.38 |
| SF-6D (Utility) | 0.64 (0.15) | 191 | 0.62 (0.16) | 27 | 0.05 | 0.155 | −0.02 | 0.12 | 0.29 |
| SF-12 PCS | 36.90 (12.45) | 185 | 36.70 (11.51) | 24 | 0.20 | 0.942 | −5.09 | 5.48 | 0.02 |
| SF-12 MCS | 45.99 (13.24) | 185 | 41.12 (13.21) | 24 | 4.87 | 0.001 | −0.79 | 10.55 | 0.37 |
| SGRQ Symptoms Score | 33.04 (28.00) | 194 | 38.57 (27.05) | 27 | −5.54 | 0.334 | −16.83 | 5.75 | 0.20 |
| SGRQ Activity Score | 45.91 (31.26) | 169 | 48.63 (36.07) | 24 | 2.72 | 0.696 | −16.44 | 10.99 | 0.09 |
| SGRQ Impact Score | 22.08 (22.46) | 169 | 22.49 (22.65) | 25 | 0.41 | 0.932 | −9.91 | 9.09 | 0.02 |
| SGRQ Total Score | 31.95 (23.97) | 154 | 33.04 (26.29) | 21 | 1.09 | 0.847 | −12.22 | 10.05 | 0.04 |
SD denotes standard deviation