Table 7 AUC values for the two scoring systems to predict the corresponding AHI and their comparisons
From: Weighted Epworth sleepiness scale predicted the apnea-hypopnea index better
Feature | Derivation cohort (n = 756) | Validation cohort (n = 810) | ||||
|---|---|---|---|---|---|---|
AUC value | Standard error | 95% CI | AUC value | Standard error | 95% CI | |
ESS | ||||||
AHI ≥ 5 | 0.840 | 0.0160 | 0.811–0.865 | 0.906 | 0.0114 | 0.884–0.925 |
AHI > 15 | 0.825 | 0.0143 | 0.797–0.852 | 0.827 | 0.0153 | 0.799–0.852 |
AHI > 30 | 0.829 | 0.0161 | 0.800–0.855 | 0.806 | 0.0151 | 0.777–0.833 |
Weighted ESS | ||||||
AHI ≥ 5 | 0.945 | 0.0122 | 0.927–0.960 | 0.930 | 0.0088 | 0.910–0.946 |
AHI > 15 | 0.897 | 0.0111 | 0.873–0.917 | 0.877 | 0.0117 | 0.852–0.899 |
AHI > 30 | 0.885 | 0.0120 | 0.860–0.906 | 0.847 | 0.0136 | 0.820–0.871 |
Difference | z statistic | p value | Difference | z statistic | p value | |
AHI ≥ 5 ESS ~ Weighted ESS | 0.106 | 7.230 | < 0.0001 | 0.0237 | 3.092 | 0.0020 |
AHI > 15 ESS ~ Weighted ESS | 0.0711 | 6.519 | < 0.0001 | 0.0498 | 5.462 | < 0.0001 |
AHI > 30 ESS ~ Weighted ESS | 0.0557 | 6.478 | < 0.0001 | 0.0407 | 4.166 | < 0.0001 |