Table 2.
SF-36 scale scores in patients referred to an overnight sleep study due to a clinical suspicion of obstructive sleep apnea (sleep study group; N = 418) categorized according to OSA findings.
| Normal | Obstructive sleep apnea | P *** | |||
|---|---|---|---|---|---|
| Mild | Moderate | Severe | |||
| AHI * | <5 | 5–14 | 15–29 | ≥30 | |
| N | 194 | 111 | 60 | 53 | |
| SF-36 scales** | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |
| Physical functioning | 81.4 (19.6) | 79.9 (20.0) | 79.5 (21.1) | 76.7 (16.9) | 0.052 |
| Role physical | 54.5 (41.0) | 53.8 (41.0) | 51.7 (41.4) | 51.9 (39.8) | 0.92 |
| Bodily pain | 60.8 (28.2) | 62.6 (26.8) | 63.1 (29.9) | 59.7 (30.2) | 0.92 |
| General health | 59.5 (25.0) | 61.4 (23.4) | 59.1 (24.2) | 59.2 (21.7) | 0.88 |
| Vitality | 34.8 (23.5) | 40.4 (20.4) | 39.7 (23.2) | 37.6 (20.4) | 0.118 |
| Social functioning | 69.1 (27.6) | 76.0 (25.2) | 71.0 (28.1) | 75.9 (22.2) | 0.143 |
| Role emotional | 67.4 (38.7) | 67.9 (39.2) | 70.0 (36.7) | 73.6 (38.9) | 0.68 |
| Mental health | 68.8 (18.8) | 75.4 (15.9) | 73.3 (17.9) | 73.1 (19.2) | 0.020 |
| Physical component summary**** | 44.3 (10.8) | 43.7 (10.6) | 43.3 (10.6) | 42.1 (9.7) | 0.49 |
| Mental component summary**** | 43.8 (11.0) | 47.2 (10.4) | 46.4 (10.6) | 47.6 (11.0) | 0.023 |
*Apnea-hypopnea index.
**Scored on a 0–100 scale.
***Kruskal-Wallis test.
****Standardized for comparison with a U.S. general population with mean 50 (SD 10).