Table 5. Stepwise Logistic Regression Analysis of Risk Factors Associated with the Prevalence of OSA in Hypertensive Patients.
| Step | Stepwise selection (p value at entry or stay, <0.25) | Multivariate model (c=0.767, AIC=448.79) | |||
|---|---|---|---|---|---|
| Variables | Score statistics | p value | OR (95% CI) | p value | |
| 1 | Waist circumference (cm) | 28.82 | <0.001 | 1.056 (1.018-1.095) | 0.003 |
| 2 | Age (yrs) | 35.01 | <0.001 | 1.067 (1.046-1.089) | <0.001 |
| 3 | Male sex | 16.02 | <0.001 | 1.916 (0.959-3.829) | 0.066 |
| 4 | Neck circumference (cm) | 3.39 | 0.066 | 1.108 (0.979-1.255) | 0.105 |
| 5 | Resistant HTN | 1.62 | 0.203 | 1.708 (0.744-3.923) | 0.207 |
OSA, obstructive sleep apnea; OR, odds ratio; CI, confidence interval; HTN, hypertension; AIC, Akaike Information Criterion.