Table 4 Sleep characteristics
Variables | n (%) |
|---|---|
Smoking | 40(39.6) |
Caffeine use | 95(94.1) |
Coffee (per ml) | |
None | 20(19.8) |
Up to 100 | 8(7.9) |
Up to 200 | 22(21.8) |
Up to 300 | 31(30.7) |
More than 300 | 20(19.8) |
Tea (per ml) | |
None | 34(33.7) |
Up to 100 | 33(32.7) |
Up to 200 | 18(17.8) |
Up to 300 | 11(10.9) |
More than 300 | 5(5.0) |
Energy drinks (per ml) | |
None | 87(86.1) |
Up to 100 | 6(5.9) |
Up to 200 | 3(3.0) |
Up to 300 | 5(5.0) |
Caffeine at night (times per week) | |
None | 34(33.7) |
Once or twice | 29(28.7) |
Three to four | 16(15.8) |
More than four | 22(21.8) |
Non-shift sleep hours | |
≤ 4 h | 5(5.0) |
4–6 h | 61(60.4) |
≥ 6 h | 35(34.7) |
Shift sleep hours | |
≤ 4 h | 85(84.1) |
4–6 h | 14(13.9) |
≥ 6 h | 2(2.0) |
Sleeping pills use | 4(4.0) |
Time taken to fall asleep | |
≤ 10mins | 27(26.7) |
10–30 min | 35(34.7) |
30–60 min | 28(27.7) |
> 60mins | 11(10.9) |
Waking up during sleep | 73(72.3) |
Wake up to eat | 17(16.8) |
Wake up due to noise | 59(58.4) |
Sleep walking | 0(0.0) |
Nightmares | 51(50.5) |
Epworth Sleepiness Scale | |
< 10 | 63(62.4) |
≥ 10 | 38(37.6) |