Table 1.
Characteristics of the Sample
| Variable | All Subjects (N=195) | Men (N=103) | Women (N=92) | p-value |
|---|---|---|---|---|
| Age, years, mean (SD) | 60.0 (9.2) | 59.5 (9.6) | 60.5 (8.7) | 0.48 |
| BMI, kg/m2, mean (SD) | 33.7 (5.6) | 32.5 (5.0) | 35.1 (5.8) | < 0.001 |
| Total fat, grams, mean (SD) | 38,254 (11,535) | 34,848 (10,905) | 42,067 (11,070) | < 0.001 |
| Race,% | 0.12 | |||
| White | 57 | 63 | 49 | |
| African-American | 33 | 27 | 40 | |
| Other | 10 | 10 | 11 | |
| HbAlc%,mean(SD) | 7.50 (0.92) | 7.55 (0.95) | 7.44 (0.89) | 0.42 |
| ODI, mean (SD) | 19.7 (14.0) | 21.5 (15.0) | 17.6 (12.6) | 0.05 |
| ODI (events/hr) quartile, % | 0.07 | |||
| I (< 10.5 events/hr) | 25 | 23 | 27 | |
| II (10.5 – 14.8 events/hr) | 25 | 24 | 26 | |
| III (14.9 – 23.3 events/hr) | 25 | 21 | 31 | |
| IV (≥ 23.3 event/hr) | 25 | 32 | 16 | |
| Percent time with O2 < 90% | 18.4 (21.3) | 17.0 (18.8) | 19.9 (23.9) | 0.34 |
BMI: body mass index; HbA1c: hemoglobin A1c; ODI: oxygen desaturation index (events/hr); p-value comparing men and women.