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Table 3 Sleep quality and its component score among undergraduate medical students at Tikur Anbessa Specialized hospital, Addis Ababa, Ethiopia, 2019 (N = 576)

From: Magnitude and correlates of sleep quality among undergraduate medical students in Ethiopia: cross –sectional study

Components Frequency Percent
Sleep latency
 0 141 24.5
 1 156 27.1
 2 132 22.9
 3 147 25.5
Sleep duration
 .> 7 h 65 11.3
 6-7 h 220 38.2
 5-6 h 39 6.8
 < 5 h 252 43.8
Sleep efficiency (%)
 > 85 270 46.9
 75–84 115 20.0
 65–74 71 12.3
 > 65 120 20.8
Day time dysfunction
 0 188 32.6
 1 84 14.6
 2 148 25.7
 3 156 27.1
Sleep disturbance
 0 114 19.8
 1 194 33.7
 2 148 25.7
 3 120 20.8
Subjective sleep quality
 Very good 184 31.9
 Fairly good 124 21.5
 Fairly bad 132 22.9
 Very bad 136 23.6
Use of sleep medication
 Not during the past month 294 51.0
 Less than once a week 80 13.9
 Once or twice a week 153 26.6
 Three or more times a week 49 8.5
Sleep quality score
 Good sleep 219 38.0
 Poor sleep 357 62.0