|  | SA severity group |
---|
Variable | non-SA AHI < 5 n = 472 | Mild AHI: 5–14.9
n = 192 | Moderate AHI: 15–29.9 n = 59 | Severe AHI: ≥30 n = 49 | p for trendc
|
 |  | 1 | 2 | 3 |  |
AHI, n/h | 1.7 ± 1.5a
| 9.0 ± 2.9 | 21.7 ± 4.5 | 44.3 ± 10.8 | <0.001 |
ODI, % | 2.6 ± 7.7a
| 8.1 ± 12.423
| 14.0 ± 17.413
| 35.1 ± 25.112
| <0.001 |
Average SaO2, % | 94.5 ± 1.7a
| 93.9 ± 1.83
| 93.4 ± 2.83
| 91.9 ± 4.912
| 0.001 |
DeSaO2 max, % | 6.7 ± 8.3a
| 12.0 ± 8.03. | 15.2 ± 10.53
| 24.6 ± 17.512
| <0.001 |
ESS score | 6.0 ± 3.5b
| 6.7 ± 3.5 | 6.0 ± 3.2 | 7.6 ± 3.8 | 0.062 |
ESSÂ >Â 10, n (%) | 74 (15.7) | 34 (17.7) | 11 (18.6) | 12 (24.5) | 0.556 |
- Data are presented as mean ± SD or number of patients (%)
-
SA sleep apnea, AHI apnea-hypopnea index, events per hour, ODI oxygen desaturation index, SaO
2
saturation of nocturnal arterial oxygen, DeSaO
2
max maximal oxygen desaturation, ESS Epworth sleepiness scale
-
ap < 0.01 between non-SA and every SA groups
-
b
p < 0.05 between non-SA and Sever SA (ANOVA for all four groups, post hoc with Bonferroni correction)
-
cANOVA or χ2 test for SA severity groups, non-SA group was excluded from this analysis
-
123the number in superscript indicates the SA severity groups, with significant differences p < 0.05 (ANOVA for three SA severity groups, post hoc with Bonferroni correction)