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Sleep duration on week nights and on weekends/days off in subjects with insomnia disorder (n = 118) and in subjects without insomnia disorder (n = 1005).
| Sleep duration on week nights (hrs) | Sleep duration on weekends/days off (hrs) | |||
|---|---|---|---|---|
| Mean | SD | Mean | SD | |
| Subjects with insomnia disorder | 5.77 | 1.64 | 7.04*** | 2.41 |
| Subjects without insomnia disorder | 7.03 | 1.05 | 7.86*** | 1.37 |
SD: standard deviation: ***P < .001.
