Odds of prevalent diabetes mellitus by OSA severity (stratified by level of daytime sleepiness)
| Sleepy (ESS ⩾10) | Non-sleepy (ESS <10) | |||
| OR (95% CI) | p Value | OR (95% CI) | p Value | |
| Unadjusted model | ||||
| Mild OSA | 1.24 (0.65 to 2.38) | 0.51 | 1.47 (0.47 to 4.60) | 0.51 |
| Moderate OSA | 1.70 (0.87 to 3.32) | 0.12 | 2.03 (0.61 to 6.76) | 0.25 |
| Severe OSA | 4.11 (2.30 to 7.33) | <0.001 | 2.79 (0.87 to 9.00) | 0.09 |
| Multivariate adjusted model* | ||||
| Mild OSA | 0.98 (0.50 to 1.94) | 0.96 | 0.94 (0.28 to 3.17) | 0.92 |
| Moderate OSA | 1.13 (0.54 to 2.32) | 0.75 | 0.820.21 to 3.14) | 0.77 |
| Severe OSA | 2.59 (1.35 to 4.97) | 0.004 | 1.16 (0.31 to 4.37) | 0.83 |
CI, confidence interval; ESS, Epworth Sleepiness Scale; OR, odds ratio; OSA, obstructive sleep apnoea.
Reference group is patients with no OSA.
*Multivariate model adjusted for age, gender, body mass index, neck circumference and smoking status.