Table 3

Sleep quality and its components scores among university students
Variables (N = 2551) Frequency Percentage
Sleep Duration Greater than 7 hrs 960 37.6%
Mean (SD) = 6.79(1.84) 6-7 hrs 1060 41.6%
5-6 hrs 286 11.2%
Less than 5 hrs 245 9.6%
Sleep latency 0 478 18.7%
1 859 33.7%
2 918 36.0%
3 296 11.6%
Day time dysfunction 0 519 20.3%
1 1267 49.7%
2 610 23.9%
3 155 6.1%
Sleep efficiency >85% 1790 70.2%
75-84% 343 13.4
65-74% 173 6.8%
<65% 245 9.6%
Subjective Sleep quality Very good 852 33.4%
Fairly good 1385 54.3%
Fairly bad 236 9.3%
Very bad 78 3.1%
Sleep disturbance 0 125 4.9%
1 1722 67.4%
2 686 26.9%
3 18 0.7%
Use of sleep medication Not during the past month 2326 91.2%
Lessa than once a week 136 5.3%
Once or twice a week 65 2.5%
Three or more times a week 24 0.9%
Sleep quality score Good sleep 1127 44.2%
Mean (SD) = 6.23(2.89) Poor sleep 1424 55.8%

Lemma et al.

Lemma et al. BMC Psychiatry 2012 12:237   doi:10.1186/1471-244X-12-237

Open Data