Table 1.
Subject characteristics by apnea-hypopnea index categories among men*
| Apnea-hypopnea index (events per hour) |
||||
|---|---|---|---|---|
| <5 | 5 to <15 | 15 to <30 | ≥ 30 | |
| Number of subjects | 829 | 644 | 282 | 172 |
| Age, y | 61 (54, 69) | 64 (57, 71) | 64 (57, 72) | 65 (58, 72) |
| BMI, kg/m2 | 27.0 (24.6, 29.3) | 28.8 (26.2, 31.4) | 29.7 (26.9, 33.5) | 31.3 (27.9, 34.9) |
| Race, n (%) | ||||
| Caucasian | 664 (80.1) | 508 (78.9) | 227 (80.5) | 138 (80.2) |
| African American | 45 (5.4) | 32 (5.0) | 20 (7.1) | 6 (3.5) |
| American Indian /Alaskan | 70 (8.4) | 62 (9.6) | 29 (10.3) | 21 (12.2) |
| Other | 50 (6.0) | 42 (6.5) | 6 (2.1) | 7 (4.1) |
| Smoking Status, n (%) | ||||
| Never | 299 (36.1) | 212 (32.9) | 106 (37.6) | 59 (34.3) |
| Current | 139 (16.8) | 70 (10.9) | 22 (7.8) | 13 (7.6) |
| Former | 391 (47.2) | 362 (56.2) | 154 (54.6) | 100 (58.1) |
| Systolic BP, mm Hg | 125 (116, 138) | 128 (118, 141) | 128 (118, 139) | 133 (121, 145) |
| Diastolic BP, mm Hg | 75 (68, 81) | 75 (69, 83) | 75 (70, 82) | 74.5 (68, 82.5) |
| Use of antihypertensive meds, n (%) | 212 (25.6) | 212 (32.9) | 90 (31.9) | 86 (50.0) |
| Diabetes, n (%) | 73 (8.8) | 77 (12.0) | 39 (13.8) | 29 (16.9) |
| Cholesterol, mg/dL | 194 (173, 220) | 198 (176, 221) | 202 (174, 224) | 199 (177, 225) |
| HDL cholesterol, mg/dL | 43 (36, 51 ) | 42 (35, 51) | 42 (35, 49) | 40 (33, 48) |
| Use of lipid-lowering medications, n (%) | 64 (7.7) | 61 (9.5) | 25 (8.9) | 20 (11.6) |
*
Values are presented as number and percent, or as median and interquartile range.