Table 6.
Actigraphically determined sleep variables in participants with chronic obstructive pulmonary disease with and without insomniaa
| Insomnia | No insomnia | P | |
|---|---|---|---|
| Mean sleep time (minutes, mean ± SD) | 379.5 ± 65.3 | 448.8 ± 75.6 | < 0.001 |
| Sleep efficiency (%, mean ± SD) | 75.2 ± 9.4% | 80.6 ± 11.1% | 0.03 |
| Wakefulness after sleep onset (min, mean ± SD) | 116.7 ± 51.7 | 96.9 ± 56.0 | 0.02 |
a
Insomniacs had lower sleep time and sleep efficiency and higher wakefulness after sleep onset compared with those without insomnia. SD, standard deviation.