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Table 2 General description of the sleep problem [SOS part 1 (overview) & 2 (sleep habits)]

From: Self-reported sleep disturbances in renal transplant recipients

General sleep problem

Frequency

Percentage

Having an actual problem with sleep or wakefulness

179

69.1

Main sleep problem

  

Difficulty falling asleep

83

32.1

Difficulty staying asleep

128

49.4

Awakening early and being unable to fall back asleep

76

29.3

Excessive long sleep at night

21

8.1

Unusual behavior or experiences during sleep (e.g., nightmares, sleepwalking)

30

11.6

Excessive sleepiness during waking hours

66

25.5

Other problems

34

13.1

Judgment of the sleep problem

  

Intense severity of the sleep problem (or problems)

67

26.9

Intense amount of interference with ability to function at home, at work, and with other people

48

19.3

Fairly intense sleepiness before bedtime

127

51.0

Better sleep outside compared to the sleep at home

11

4.4

Having regular sleep times

192

74.1

Times related to sleep

Mean

Std

Bedtime during the week

22.6

0.9

Bedtime at weekends

23.2

1.3

Time of lights off during the week

22.9

1.1

Sleep latency

28.1

19.3

Frequencies of sleep interruptions

2.8

1.8

Sleep latency after interruptions

21.9

16.4

Wakeup time during the week

6.5

1.2

Sleep duration

6.4

1.5

Get up time during the week

6.9

1.1

Get up time at weekends

8.0

1.1

 

Frequency

Percentage

How long having sleep problem

  

Between 6 months and 2 years

74

29.7

Between 2 and 5 years

60

24.1

>5 years

93

37.3

Course of the problem

  

Becoming worse

15

6.0

Same

112

45.0

Improving

17

6.8

Irregular

79

31.7

Recurring regularly

8

3.2

Frequency

  

Every day/night

109

43.8

Sometimes in a week

24

9.6

Sometimes in a month

31

12.4