Table 1.
Baseline Characteristics of the Study Participants
| Overall (n = 264) |
Diabetes Support and Education* (n = 139) |
Intensive Lifestyle Intervention* (n = 125) |
||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| Age. yr | 61.3 | 6.5 | 61.3 | 6.4 | 61.2 | 6.6 |
| Sex, F, % | 59 | — | 57 | — | 62 | — |
| Race/ethnicity, % | ||||||
| African American | 18.6 | — | 18.8 | — | 18.4 | — |
| Hispanic | 3.8 | — | 3.6 | — | 4.0 | — |
| White | 73.4 | — | 73.9 | — | 72.8 | — |
| BMI, kg/m2 | 36.6 | 5.7 | 36.4 | 5.5 | 36.8 | 5.8 |
| Weight, kg | 102.3 | 18.2 | 101.9 | 16.9 | 102.8 | 19.5 |
| Height, cm | 167.1 | 9.5 | 167.4 | 9.3 | 166.8 | 9.7 |
| Waist circumference, cm | 115.8 | 13.2 | 115.7 | 12.1 | 115.8 | 14.4 |
| Neck circumference, cm | 41.3 | 4.2 | 41.6 | 4.1 | 41.1 | 4.3 |
| Apnea–hypopnea index† | 23.3 | 16.5 | 23.7 | 15.0 | 22.9 | 18.0 |
| Obstructive apnea index† | 12.8 | 13.1 | 12.5 | 11.9 | 13.0 | 14.4 |
| Central apnea index† | 0.4 | 1.0 | 0.5 | 1.1 | 0.4 | 1.0 |
| Hypopnea index† | 10.1 | 8.2 | 10.7 | 8.4 | 9.4 | 7.9 |
| Oxygen desaturation index >4%† | 19.5 | 14.9 | 20.3 | 13.7 | 18.6 | 16.1 |
| Fasting glucose, mg/dl | 151.0 | 41.6 | 152.9 | 44.0 | 148.9 | 38.8 |
| HbA1c, % | 7.2 | 1.0 | 7.4 | 1.1 | 7.0 | 0.9 |
| Self-reported duration of diabetes, yr | 7.3 | 7.1 | 7.5 | 6.3 | 7.2 | 7.9 |
Definition of abbreviation: BMI = body mass index.
*
None of the variables were statistically different between groups.
†
Events per hour of sleep.