Scale and Subscales

N

Min.

Max.

Mean

SD

Perceived Stress Scale

153

8

40

23.76

6.84

Subjective Sleep Quality

153

0

3

1.81

0.86

Sleep Latency

153

0

3

2.00

0.80

Sleep Duration

153

0

3

1.46

0.90

Habitual Sleep Efficiency

153

0

3

0.32

0.62

Sleep Disturbances

153

1

3

1.64

0.61

Use of Sleeping Pills

153

0

3

0.18

0.57

Daytime Dysfunction

153

0

3

1.75

1.06

Total PSQI

153

2

15

9.16

3.33