From: Sleep hygiene practices and sleep quality among medical students in Egypt: a cross-sectional study
Items of Sleep Hygiene Index | Male (n = 277) | Female (n = 227) | Total (n = 504) | X2 | P | |||
---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | |||
Take daytime naps for two or more hours. | Â | Â | Â | Â | Â | Â | 4.898 | 0.086 |
 Never/rarely | 110 | 39.7 | 73 | 32.2 | 183 | 36.3 |  |  |
 Sometimes | 103 | 37.2 | 106 | 46.7 | 209 | 41.5 |  |  |
 Frequently/always | 64 | 23.1 | 48 | 21.1 | 112 | 22.2 |  |  |
Go to bed at different times from day to day. | Â | Â | Â | Â | Â | Â | 6.025 | 0.049* |
 Never/rarely | 87 | 31.4 | 51 | 22.5 | 138 | 27.4 |  |  |
 Sometimes | 84 | 30.3 | 87 | 38.3 | 171 | 33.9 |  |  |
 Frequently/always | 106 | 38.3 | 89 | 39.2 | 195 | 38.7 |  |  |
Get out of bed at different times from day to day. | Â | Â | Â | Â | Â | Â | 2.687 | 0.261 |
 Never/rarely | 76 | 27.4 | 62 | 27.3 | 138 | 27.4 |  |  |
 Sometimes | 105 | 37.9 | 72 | 31.7 | 177 | 35.1 |  |  |
 Frequently/always | 96 | 34.7 | 93 | 41.0 | 189 | 37.5 |  |  |
Exercise to the point of sweating within one hour of going to bed. |  |  |  |  |  |  | 15.712 | < 0.001* |
 Never/rarely | 165 | 59.6 | 172 | 75.8 | 337 | 66.9 |  |  |
 Sometimes | 62 | 22.3 | 35 | 15.4 | 97 | 19.2 |  |  |
 Frequently/always | 50 | 18.1 | 20 | 8.8 | 70 | 13.9 |  |  |
Stay in bed longer than I should two or three times a week. | Â | Â | Â | Â | Â | Â | 3.108 | 0.211 |
 Never/rarely | 83 | 30.0 | 69 | 30.4 | 152 | 30.2 |  |  |
 Sometimes | 88 | 31.8 | 57 | 25.1 | 145 | 28.7 |  |  |
 Frequently/always | 106 | 38.2 | 101 | 44.5 | 207 | 41.1 |  |  |
Use tobacco, or caffeine within 4Â h of going to bed or after going to bed. | Â | Â | Â | Â | Â | Â | 4.486 | 0.106 |
 Never/rarely | 163 | 58.8 | 143 | 63.0 | 306 | 60.7 |  |  |
 Sometimes | 59 | 21.3 | 32 | 14.1 | 91 | 18.1 |  |  |
 Frequently/always | 55 | 19.9 | 52 | 22.9 | 107 | 21.2 |  |  |
Do something that may wake me up before bedtime | Â | Â | Â | Â | Â | Â | 2.615 | 0.270 |
 Never/rarely | 46 | 16.6 | 50 | 22.0 | 96 | 19.0 |  |  |
 Sometimes | 89 | 32.1 | 64 | 28.2 | 153 | 30.4 |  |  |
 Frequently/always | 142 | 51.3 | 113 | 49.8 | 255 | 50.6 |  |  |
Go to bed feeling stressed, angry, upset, or nervous. | Â | Â | Â | Â | Â | Â | 5.098 | 0.078 |
 Never/rarely | 87 | 31.4 | 51 | 22.5 | 138 | 27.4 |  |  |
 Sometimes | 100 | 36.1 | 90 | 39.6 | 190 | 37.7 |  |  |
 Frequently/always | 90 | 32.5 | 86 | 37.9 | 176 | 34.9 |  |  |
Use bed for things other than sleeping | Â | Â | Â | Â | Â | Â | 1.062 | 0.588 |
 Never/rarely | 46 | 16.6 | 36 | 15.8 | 82 | 16.3 |  |  |
 Sometimes | 72 | 26.0 | 51 | 22.5 | 123 | 24.4 |  |  |
 Frequently/always | 159 | 57.4 | 140 | 61.7 | 299 | 59.3 |  |  |
Sleep on an uncomfortable bed | Â | Â | Â | Â | Â | Â | 12.253 | 0.002* |
 Never/rarely | 181 | 65.3 | 180 | 79.3 | 361 | 71.6 |  |  |
 Sometimes | 62 | 22.4 | 28 | 12.3 | 90 | 17.9 |  |  |
 Frequently/always | 34 | 12.3 | 19 | 8.4 | 53 | 10.5 |  |  |
Sleep in an uncomfortable bedroom | Â | Â | Â | Â | Â | Â | 4.400 | 0.111 |
 Never/rarely | 181 | 65.3 | 168 | 74.0 | 349 | 69.2 |  |  |
 Sometimes | 57 | 20.6 | 35 | 15.4 | 92 | 18.3 |  |  |
 Frequently/always | 39 | 14.1 | 24 | 10.6 | 63 | 12.5 |  |  |
Do important work before bedtime | Â | Â | Â | Â | Â | Â | 1.694 | 0.429 |
 Never/rarely | 40 | 14.4 | 24 | 10.6 | 64 | 12.7 |  |  |
 Sometimes | 91 | 32.9 | 77 | 33.9 | 168 | 33.3 |  |  |
 Frequently/always | 146 | 52.7 | 126 | 55.5 | 272 | 54.0 |  |  |
Think, plan, or worry when in bed. | Â | Â | Â | Â | Â | Â | 11.773 | 0.003* |
 Never/rarely | 48 | 17.3 | 17 | 7.4 | 65 | 12.9 |  |  |
 Sometimes | 79 | 28.5 | 63 | 27.8 | 142 | 28.2 |  |  |
 Frequently/always | 150 | 54.2 | 147 | 64.8 | 297 | 58.9 |  |  |