Table 1.
Baseline characteristics of study population (N=82).
| Characteristics at baseline | Statistics | |
| Age in years, mean (SD) | 64 (4) | |
| Gender, n (%) | ||
|
|
Male | 20 (24) |
|
|
Female | 61 (74) |
|
|
Other | 1 (1) |
| Education, n (%) | ||
|
|
High school graduate or general education development degree | 3 (4) |
|
|
Trade, technical or vocational training | 2 (2) |
|
|
Some college, no degree | 22 (27) |
|
|
College graduate, associate’s or bachelor’s | 29 (35) |
|
|
Graduate degree | 19 (23) |
|
|
Doctorate degree | 7 (9) |
| Race/ethnicity, n (%) | ||
|
|
African American | 5 (6) |
|
|
Asian | 1 (1) |
|
|
White | 72 (88) |
|
|
Hispanic | 3 (4) |
|
|
Other | 1 (1) |
| BMIa, n (%) | ||
|
|
Underweight, <18.5 kg/m2 | 0 (0) |
|
|
Healthy weight, 18.5-24.9 kg/m2 | 16 (20) |
|
|
Overweight, 25.0-29.9 kg/m2 | 24 (29) |
|
|
Obese, 30-34.9 kg/m2 | 25 (30) |
|
|
Very obese, ≥35 kg/m2 | 15 (18) |
| Average nightly sleep duration, n (%) | ||
|
|
<3 hours | 1 (1) |
|
|
4 to 5 hours | 4 (5) |
|
|
5 to 6 hours | 18 (22) |
|
|
6 to 7 hours | 35 (43) |
|
|
7 to 8 hours | 16 (20) |
|
|
8 to 9 hours | 6 (7) |
|
|
9 to 10 hours | 0 (0) |
|
|
>10 hours | 2 (2) |
aBMI: body mass index.