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. 2012 Feb 9;4:1–7. doi: 10.2147/NSS.S27971

Table 1.

Time going to bed among university students

Go to bed at Frequency Percentage
8 pm 3 0.2
9 pm 17 0.8
10 pm 187 8.5
11 pm 682 31.1
12 am 721 32.8
1 am 374 17.0
2 am 157 7.1
3 am 40 1.8
4 am 7 0.3
5 am 6 0.3