Time after procedure | No. studies | Random pooled prevalence (95% CI) | Significance tests of prevalence = 0 | Heterogeneity statistic | df | P | I^2* |
---|---|---|---|---|---|---|---|
Mild OSA AHI ≥ 5 | |||||||
PSG | |||||||
Within 2 weeks | 2 | 0.67 (0.61–0.72) | z = 24.01, p = 0.00 | – | – | – | – |
> 2 weeks | 4 | 0.72 (0.67–0.76) | z = 28.72, p = 0.00 | 4.22 | 3 | 0.24 | 28.94% |
Test for heterogeneity between timing sub-groups 1.51, df = 1, p = 0.22 | |||||||
Portable | |||||||
Within 2 weeks | 6 | 0.59 (0.53–0.65) | z = 19.80, p = 0.00 | 16.24 | 5 | 0.01 | 69.22% |
> 2 weeks | 3 | 0.72 (0.55–0.89) | z = 8.43, p = 0.00 | – | – | – | – |
Test for heterogeneity between timing sub-groups 2.01, df = 1, p = 0.16 | |||||||
Moderate OSA AHI ≥ 15 | |||||||
PSG | |||||||
Within 2 weeks | 4 | 0.51 (0.45–0.57) | z = 16.75, p = 0.00 | 4.37 | 3 | 0.22 | 31.28% |
> 2 weeks | 6 | 0.43 (0.39–0.48) | z = 19.98, p = 0.00 | 4.40 | 6 | 0.49 | 0.01% |
Portable | |||||||
Within 2 weeks | 16 | 0.50 (0.44–0.56) | z = 16.84, p = 0.00 | 36.77 | 15 | 0.00 | 95.26% |
> 2 weeks | 3 | 0.49 (0.43–0.54) | z = 18.73, p = 0.00 | – | – | – | – |
Test for heterogeneity between timing sub-groups 0.20, df = 1, p = 0.65 | |||||||
Severe OSA AHI ≥ 30 | |||||||
PSG & Portable combined | |||||||
Within 2 weeks | 8 | 0.22 (0.15–0.29) | z = 6.47, p = 0.00 | 39.26 | 7 | 0.00 | 84.72% |
> 2 weeks | 2 | 0.24 (0.18–0.30) | z = 7.41, p = 0.00 | – | – | – | – |
Test for heterogeneity between timing sub-groups 0.16, df = 1, p = 0.69 |