Sleep duration

6.90 ± 1.40

6.59 ± 1.31

0.007

PSQI-J

Global score

4.37 ± 2.76

4.91 ± 2.61

0.006

Component scores

Sleep quality (C1)

1.37 ± 0.77

1.40 ± 0.76

0.543

Sleep latency (C2)

0.80 ± 0.84

0.94 ± 0.86

0.04

Sleep duration (C3)

1.03 ± 0.88

1.25 ± 0.89

0.007

Sleep efficiency (C4)

0.28 ± 0.69

0.32 ± 0.71

0.37

Sleep disturbance (C5)

0.34 ± 0.54

0.32 ± 0.48

0.99

Daytime dysfunction (C7)

0.56 ± 0.79

0.68 ± 0.77

0.025