Variable | Category | Number (%) |
---|---|---|
Sleep duration (hours) |  < 5.0 | 35(6.0%) |
5.0–5.9 | 158(27.0%) | |
6–6.9 | 208(35.4%) | |
 ≥ 7 | 185 (31.6%) | |
Time usually go to bed at night at local time |  < 4 h | 73(12.5%) |
4–6 h | 296(50.5%) | |
 > 6 h | 217(37.0%) | |
Time taken to fall asleep (minutes) |  ≤ 15 | 51(8.7%) |
16–30 | 284(48.5%) | |
31–60 | 191(32.6%) | |
 ≥ 60 | 60(10.2%) | |
Waking up during sleep in mid night | never | 178(30.4%) |
1 time a week | 230(39.2%) | |
1–2 times a week | 109(18.6%) | |
 > 3 times a week | 69(11.8%) | |
Time to wake up in the morning local time (hours) | 11–12 am | 254(43.3%) |
12–12:45 am | 88(14.7%) | |
1–2:30 am | 244(41.6%) | |
Taking sleep medication during past month | Never | 273(46.6%) |
 < once a week | 207(35.3%) | |
1–2 times per week | 65(11.1%) | |
 ≥ 3 times per week | 41(7.0%) |