Table 2 Prevalence estimates as a function of OSA severity and method of assessment
No. studies | Random pooled prevalence (95% CI) | Significance tests of prevalence = 0 | Heterogeneity Statistic (Q) | I^2a | Sensitivity prevalenceb | Rank correlation test (Begg) | Reg test for funnel plot asymmetry (Egger) | |
|---|---|---|---|---|---|---|---|---|
Mild OSA | ||||||||
AHI ≥ 5 | ||||||||
PSG | 7 | 0.66 (0.57–0.74) | z = 14.91, p < 0.001 | 51.24, p < 0.001 | 88.29% | 0.66 (0.57–0.74) | 0.23, p = 0.517 | −1.5, p = 0.125 |
Portable monitor | 9 | 0.63 (0.57–0.69) | z = 19.13, p < 0.001 | 46.18, p < 0.001 | 82.68% | 0.63 (0.57–0.68) | −0.16, p = 0.612 | −0.6, p = 0.566 |
Moderate OSA | ||||||||
AHI ≥ 15 | ||||||||
PSG | 10 | 0.47 (0.44–0.50) | z = 29.78, p < 0.001 | 8.16, p = 0.520 | 0.01% | 0.47 (0.43–0.50) | 0.16, p = 0.601 | 0.6, p = 0.529 |
Portable monitor | 19 | 0.50(0.45–0.55) | z = 19.27, p < 0.001 | 81.13, p < 0.001 | 94.59% | 0.49 (0.44–0.55) | 0.02, p = 0.965 | 0.1, p = 0.925 |
Severe OSA | ||||||||
AHI ≥ 30 | ||||||||
PSG | 3 | 0.22 (0.17–0.27) | z = 8.74, p < 0.001 | 2.49, p = 0.287 | 22.70% | 0.22 (0.17–0.27) | 0.98, p = 0.333 | 1.5, p = 0.141 |
Portable monitor | 6 | 0.21 (0.14–0.28) | z = 5.82, p < 0.001 | 34.77, p < 0.001 | 85.62% | 0.21 (0.13–0.28) | 0.14, p = 0.103 | 1.98. p = 0.080 |