Table 4.
Distribution of SF-36 scale scores in patients referred to an overnight sleep study due to a clinical suspicion of obstructive sleep apnea (sleep study group) compared to the general population sample.
| N | Sleep study group | General population | P ** |
|---|---|---|---|
| 418 | 5000 | ||
| SF-36 scale* | Mean (SD) | Mean (SD) | |
| Physical functioning (PF) | 80.1 (19.6) | 87.1 (19.5) | <0.001 |
| Role-physical (RP) | 53.6 (40.8) | 77.4 (36.9) | <0.001 |
| Bodily pain (BP) | 61.5 (28.3) | 74.0 (25.6) | <0.001 |
| General health (GH) | 59.9 (24.0) | 75.4 (21.7) | <0.001 |
| Vitality (VT) | 37.3 (22.4) | 61.1 (20.4) | <0.001 |
| Social functioning (SF) | 72.1 (26.5) | 86.8 (20.7) | <0.001 |
| Role emotional (RE) | 68.7 (38.5) | 84.9 (31.0) | <0.001 |
| Mental health (MH) | 71.8 (18.1) | 80.4 (15.4) | <0.001 |
| Physical component summary*** | 43.7 (10.6) | 49.4 (10.2) | <0.001 |
| Mental component summary*** | 45.6 (10.9) | 52.3 (9.0) | <0.001 |
*Scored on a 0–100 scale.
**Wilcoxon-Mann-Whitney test.
***Standardized for comparison with a U.S. general population with mean 50 (SD 10).