Table 1.
Characteristic | Value |
---|---|
Age, mean (IQR) | 71.5 (66–78) |
Female, n (%) | 364 (53.7) |
Race, n (%) | |
White, non-Hispanic | 564 (83.2) |
White, Hispanic | 26 (3.9) |
African American, non-Hispanic | 46 (6.8) |
African American, Hispanic | 0 (0.0) |
Other | 42 (6.2) |
Education, n (%) | |
Less than high school | 95 (14.0) |
High school or equivalent | 170 (25.1) |
Voc cert/some college/Assoc | 260 (38.3) |
Bachelors or higher | 154 (22.7) |
Drink alcohol, n (%) | |
Does not drink | 287 (42.3) |
1–2 drinks/day | 329 (48.5) |
3+ drinks/day | 63 (9.2) |
Smoke cigarettes, n (%) | |
Current smoker | 96 (14.1) |
Physical activity, n (%) | |
No physical activity | 136 (20.1) |
<3 time/month | 139 (20.5) |
1+ times/week | 403 (59.4) |
Modified Charlson Comorbidity, n (%) | |
0 | 69 (10.1) |
1–2 | 314 (46.2) |
3+ | 296 (43.6) |
Depressive symptoms,b mean (IQR) | 4.32 (1–7) |
Hormone replacement therapy,cn (%) | |
No | 611 (91.9) |
Yes | 54 (8.1) |
Diurnal type,dn (%) | |
8 pm– 1:59 am | 105 (19.3) |
2 am–2:59 am | 194 (35.6) |
3 am–8:59 am | 246 (45.1) |
Season, n (%) | |
Winter | 117 (17.4) |
Spring | 56 (8.3) |
Summer | 175 (26.0) |
Autumn | 324 (48.2) |
Currently Employed, n (%) | |
No | 515 (76.6) |
Yes | 157 (23.4) |
Actigraph-Measured Sleep, mean (IQR) | |
Wake after sleep onset (WASO), hours | 0.6 (0.4–0.8) |
Duration, hours | 7.8 (7.1–8.7) |
Fragmentation (%) | 14.3 (10.3–18.4) |
Self-Reported Sleep, mean (IQR) | |
Duration, hours | 7.4 (6–8) |
Troubled Sleep Scalee | 2.9 (2–4) |
Abbreviations: IQR, interquartile range; CES-D, Center for Epidemiological Studies-Depression.
a N = 672.
bAssesed utilizing a modified CES-D scale.
cAmong women only.
dDiurnal type was defined using the average midpoint of the sleep interval over the 3-day ancillary study period.
eTroubled sleep Scale is a combined metric (0 = Never/rarely, 1 = Sometimes, 2 = Most of the time) from 4 questions: feeling rested in the morning, trouble falling asleep, trouble waking during the night, and trouble waking too early.