Number

percentage

Subjective quality of sleep

Bad

86

25.4

Good

253

74.6

Sleep latency

Very bad

33

9.7

Bad-enough

36

10.6

Good enough

99

29.2

Very good

171

50.4

Sleep duration (in hours)

<7

198

58.4

≥7

141

41.6

Usual sleep efficiency (%)

<65

3

0.9

65 - 74

0

0.0

75 - 84

10

2.9

>85

326

96.2

Sleep disturbance

<1

25

7.4

2 - 9

305

90.4

10 - 18

9

2.7

Use of a sleeping pill

Not in the last month

304

89.6

Less than once a week

25

7.4

1 or 2 times a week

9

2.7

3 or 4 times a week

1

0.3

Disruption of daytime operation

Very bad

3

0.9

Enough-bad

28

8.3

Good enough

100

29.5

Very good

208

61.4

PITTSBURGH Sleep Quality Index score

≤5

162

47.8

>5

177

52.2