Table 3.
Self-Reported Health Status Scores from the SF-36 and SF-12 Questionnaires and Corresponding Effect Sizes, Before and After Real and Sham CPAP
| Before (Baseline) | After (Follow-up) | Effect size | P before/ after | Difference in effect sizes* | P for effect sizes* | |
|---|---|---|---|---|---|---|
| “Sham” CPAP | ||||||
| SF-36 | ||||||
| General health perception | 62.0 ± 21.5 | 64.3 ± 23.9 | 0.09 | 0.41 | ||
| Reported health transition | 44.6 ± 21.4 | 52.7 ± 26.2 | 0.56 | 0.020 | ||
| Physical functioning | 80.1 ± 18.5 | 82.1 ± 16.4 | 0.11 | 0.22 | ||
| Physical role | 63.7 ± 41.3 | 51.1 ± 28.5 | −0.27 | 0.016 | ||
| Mental role | 63.7 ± 39.7 | 77.5 ± 35.9 | 0.06 | 0.37 | ||
| Social functioning | 71.2 ± 30.8 | 77.3 ± 28.7 | 0.19 | 0.19 | ||
| Bodily pain | 83.4 ± 23.6 | 83.7 ± 20.3 | 0.03 | 0.77 | ||
| Energy and vitality | 38.5 ± 23.4 | 52.6 ± 26.7 | 0.58 | <0.0001 | ||
| Mental health | 72.1 ± 17.7 | 72.0 ± 22.1 | −0.05 | 0.70 | ||
| Physical CS | 69.4 ± 21.5 | 70.0 ± 18.8 | 0.04 | 0.68 | ||
| Mental CS | 64.8 ± 21.2 | 68.6 ± 22.7 | 0.16 | 0.17 | ||
| SF-12 | ||||||
| Physical CS | 66.2 ± 20.8 | 69.8 ± 20.1 | 0.18 | 0.09 | ||
| Mental CS | 66.8 ± 21.1 | 70.6 ± 22.6 | 0.19 | 0.13 | ||
| “Real” CPAP | ||||||
| SF-36 | ||||||
| General health perception | 55.0 ± 22.7 | 62.8 ± 23.4 | 0.34 | 0.003 | 0.24 | 0.12 |
| Reported health transition | 46.1 ± 24.7 | 65.5 ± 23.1 | 1.21 | <0.0001 | 0.65 | 0.001 |
| Physical functioning | 72.5 ± 21.5 | 72.8 ± 22.5 | 0.01 | 0.90 | −0.10 | 0.38 |
| Physical role | 54.4 ± 39.9 | 63.0 ± 22.7 | 0.18 | 0.16 | 0.45 | 0.008 |
| Mental role | 69.3 ± 43.1 | 90.7 ± 26.1 | 0.48 | <0.0001 | 0.41 | 0.021 |
| Social functioning | 74.3 ± 28.1 | 84.0 ± 23.0 | 0.30 | 0.030 | 0.10 | 0.60 |
| Bodily pain | 66.2 ± 29.3 | 73.1 ± 30.8 | 0.22 | 0.10 | 0.19 | 0.27 |
| Energy and vitality | 36.1 ± 21.1 | 64.7 ± 20.4 | 1.26 | <0.0001 | 0.68 | 0.001 |
| Mental health | 72.6 ± 16.5 | 81.0 ± 16.1 | 0.46 | <0.0001 | 0.51 | 0.003 |
| Physical CS | 62.0 ± 20.0 | 70.8 ± 18.5 | 0.39 | <0.0001 | 0.35 | 0.010 |
| Mental CS | 62.2 ± 20.2 | 76.8 ± 16.2 | 0.66 | <0.0001 | 0.51 | 0.002 |
| SF-12 | ||||||
| Physical CS | 58.8 ± 20.6 | 72.4 ± 18.8 | 0.64 | <0.0001 | 0.46 | 0.002 |
| Mental CS | 63.5 ± 19.9 | 77.9 ± 16.5 | 0.70 | <0.0001 | 0.51 | 0.001 |
Values are means and standard deviations. CS = component summary.
*
P values calculated for comparison between real and sham”CPAP group. P, Bold = statistically significant. Effect size, Bold = medium-large effect size (>0.5). Effect size difference, Bold = medium-large difference (>0.5).