Table 3.
Selected Demographic and Clinical Characteristics of Subjects by AHI Status
| Variable | AHI |
P value | |
|---|---|---|---|
| < 10 (n = 105) | ≥ 10 (n = 24) | ||
| Age, y, no. (%) | 0.020 | ||
| < 60 | 4 (80) | 1 (20) | |
| 60–75 | 67 (89) | 8 (11) | |
| ≥ 75 | 34 (69) | 15 (31) | |
| Sex, % | 0.011 | ||
| Women | 66 | 38 | |
| Men | 34 | 62 | |
| BMI, kg/m2 | 25.5 ± 5.1 | 24.3 ± 3.2 | 0.271 |
| History of cardiovascular disease, % | 13 | 25 | 0.154 |
| Cardiovascular medication use, % | 34 | 63 | 0.011 |
| HDL, < 40 mg/dL,% | 11 | 29 | 0.027 |
| Abnormal ECG, % | 35 | 40 | 0.715 |
| AHI | 2.5 ± 2.4 | 25.5 ± 14.8 | <0.001 |
| ODI | 0.59 ± 1.3 | 8.3 ± 9.5 | <0.001 |
AHI refers to apnea-hypopnea index (the number of apneas and hypopneas per hour of sleep); BMI, body mass index; HDL, high-density lipoprotein; ECG, electrocardiogram; ODI, oxygen desaturation index (the number of oxygen desaturations ≥ 4% per hour of sleep).
a
Comparisons employed 2-tailed t-tests for continuous measures and χ2 for categorical measures.
b
Includes history of myocardial infarction, coronary artery bypass graft surgery, coronary angioplasty, and cerebrovascular accidents.
c
Includes atrial fibrillation, t-wave abnormalities, atrioventricular block, and left axis deviation.