Table 2.
Sleep Characteristics and Sleep Disturbances Among 325 Men and Women of the Heinz Nixdorf Recall Study, Aged 45–74 Years, With a History of Coronary Artery Disease
| N | Sleep Duration at Night |
Sleep Disturbances nearly every night (%)a |
Daily Siesta |
Average Overall Sleep Duration (night & siesta)b |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Median (min) | <6h/night (%) | >8h/night (%) | DFA | DMS | EMA | Any (%) | >1h/day (%) | Median (min)c | Median (min) | ||
| Men | |||||||||||
| All (crude) | 257 | 420 | 16.0 | 10.5 | 12.5 | 46.1 | 13.4 | 30.5 | 8.2 | 60 | 426 |
| All (age-stand.) | 17.1 | 7.6 | 13.7 | 39.6 | 13.0 | 22.2 | 5.8 | ||||
| 45–54 yrs | 38 | 390 | 18.4 | 5.3 | 13.2 | 31.6 | 21.1 | 13.2 | 0 | 60 | 416 |
| 55–64 yrs | 88 | 420 | 20.7 | 9.2 | 18.4 | 47.1 | 11.6 | 21.8 | 9.2 | 60 | 420 |
| 65–74 yrs | 131 | 420 | 12.2 | 13.0 | 8.4 | 49.6 | 12.3 | 41.2 | 9.9 | 60 | 435 |
| Women | |||||||||||
| All (crude) | 68 | 420 | 27.9 | 7.4 | 25.4 | 58.8 | 17.9 | 25.0 | 4.4 | 60 | 420 |
| All (age-stand.) | 28.4 | 9.8 | 25.3 | 41.9 | 17.2 | 14.2 | 2.4 | ||||
a
DFA: difficulties falling asleep; DMS: difficulties maintaining sleep; EMA: early morning arousal
b
Overall sleep duration including sleep at night and siesta of any frequency per week
c
Median duration of siesta (minutes) among subjects with daily siesta
Missing data: per Item < 1%, therefore missing data were excluded.