Table 3. Logistic Regression with Central Apnea (Central Apnea Index >5) as Outcome.
| Characteristic | Odds Ratio (95% Confidence Interval) | |
|---|---|---|
| Unadjusted* | Adjusted† | |
| Symptom | ||
| Snoring (>3–5 times/week) | 0.91 (0.63–1.32) | 1.03 (0.70–1.51) |
| Excessive daytime somnolence (Epworth Sleepiness Scale score >10) | 1.44 (0.99–2.10) | 1.46 (1.00–2.14) |
| Subject characteristic | ||
| Age (per 5-year increase) | 1.33 (1.17–1.50)‡ | 1.34 (1.18–1.51)‡ |
| Race (reference: Caucasian) | ||
| African American | 0.70 (0.28–1.75) | 0.81 (0.32–2.03) |
| Asian | 0.75 (0.30–1.88) | 0.82 (0.32–2.06) |
| Hispanic | 0.60 (0.22–1.64) | 0.65 (0.24–1.80) |
| Obesity (BMI >30 kg/m2) | 0.99 (0.70–1.49) | 1.10 (0.76–1.58) |
| Neck circumference (per 5-cm increase) | 1.12 (0.87–1.44) | 1.27 (0.98–1.65) |
| Waist circumference (per 5-cm increase) | 1.02 (0.96–1.09) | 1.04 (0.97–1.11) |
| Socioeconomic status (range 1–10, per 1-unit increase) | 1.00 (0.91–1.09) | 1.00 (0.92–1.09) |
| Current smoker | 0.23 (0.03–1.69) | 0.28 (0.04–2.02) |
| Alcohol use (per category increase) | 0.93 (0.86–1.26) | 0.94 (0.86–1.02) |
| Comorbid factors | ||
| Hypertension | 0.95 (0.72–1.69) | 0.93 (0.70–1.24) |
| Diabetes mellitus | 1.12 (0.75–0.68) | 1.14 (0.75–1.72) |
| Cardiovascular disease | 1.30 (0.97–1.74) | 1.17 (0.87–1.58) |
| Heart failure | 2.05 (1.28–3.30)‡ | 1.88 (1.17–3.04)‡ |
| Stroke | 1.16 (0.58–2.33) | 1.08 (0.54–2.19) |
*
Unadjusted univariate models presented.
†
Models adjusted for age, race, and body mass index (BMI) except age, race, and obesity measures, which were adjusted for respective other subject characteristics.
‡
Statistically significant.