TABLE 1.
DESCRIPTION OF SAMPLE (N = 373) BY SLEEP-DISORDERED BREATHING CATEGORY
| Apnea–Hypopnea Index Category |
|||||||
|---|---|---|---|---|---|---|---|
| Total (n = 373) | <1 (n = 112) | 1–4.9 (n = 100) | 5–14.9 (n = 94) | 15–29.9 (n = 25) | ≥30 (n = 13) | CPAP Users (n = 29) | |
| Continuous variables, mean (SD) | |||||||
| Age, yr | 60 (8) | 58 (8) | 61 (7) | 61 (8) | 63 (8) | 58 (7) | 59 (8) |
| Body mass index, kg/m2 | 31 (6.9) | 28 (4.7) | 30 (6.4) | 33 (6) | 34 (7) | 36 (8.7) | 40 (6.9) |
| Waist:hip ratio | 0.9 (0.1) | 0.9 (0.1) | 0.9 (0.1) | 1 (0.1) | 0.9 (0.1) | 1 (0.1) | 1 (0.1) |
| Alcoholic drinks, number per week | 3.7 (4.7) | 3.9 (4.6) | 3.7 (4.3) | 3.8 (5.3) | 4.2 (5.6) | 2.6 (4.2) | 2.6 (4.4) |
| Sleep SaO2, % | 94.9 (2) | 95.8 (1.3) | 95.2 (1.5) | 94.7 (1.6) | 93.8 (1.5) | 92.2 (3.3) | 93.5 (3.2) |
| Insulin sensitivity, HOMA model | 3.6 (4.5) | 2.3 (1.6) | 3.1 (2.6) | 4.1 (4.1) | 4.7 (5.6) | 7.6 (11.6) | 6.6 (7.8) |
| Binary variables, n (%) | |||||||
| Current smoking | 35 (9) | 12 (11) | 13 (13) | 4 (4) | 1 (4) | 3 (23) | 2 (7) |
| Sex, male | 216 (58) | 56 (50) | 51 (51) | 67 (71) | 14 (56) | 9 (69) | 20 (70) |
| Sleepiness, Epworth >10* | 103 (31) | 27 (25) | 31 (32) | 35 (38) | 4 (16) | 6 (50) | 15 (52) |
| Cardiovascular disease† | 40 (11) | 10 (29) | 9 (9) | 10 (11) | 4 (16) | 3 (23) | 4 (14) |
| Hypertension | 187 (50) | 46 (41) | 42 (42) | 55 (59) | 16 (64) | 7 (54) | 22 (76) |
| Diabetes† | 38 (10) | 6 (5) | 7 (7) | 14 (15) | 3 (12) | 0 (0) | 8 (28) |
Definition of abbreviations: CPAP = continuous positive airway pressure; HOMA = homeostatic model assessment.
*
Epworth data not available in 10 participants.
†
Obtained by participant self-report.