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Table 8 Average measures of sleep diary parameters of 20 AS subjects compared with 9 controls. In each subject the values from each consecutive nights were averaged and these individual average values were compared on a group level. To study the night-to-night variability the standard deviations of each individual were compared on group level. Time values of h:min are given.

From: Insomnia is a frequent finding in adults with Asperger syndrome

 

AS

CO

 

Mean

SEM

Mean

SEM

Diff.

t(df), p

time of retiring to bed 1

23:54

0:18

23:18

0:31

0:36

t = 1,054 (27), ns

SD 1

1:34

0:12

1:03

0:10

0:30

t = 1,533 (27), ns

time of falling asleep 1

0:38

0:21

23:48

0:29

0:50

t = 1,343 (26), ns

SD 1

1:34

0:11

1:08

0:10

0:26

t = 1,388 (26), ns

time of awakening 1

8:39

0:15

7:42

0:17

0:56

t = 2,106 (27), 0,045

SD 1

1:38

0:09

0:55

0:10

0:43

t = 2,810 (27), 0,009

sleep latency 1

0:54

0:08

0:31

0:09

0:22

t = 1,599 (26), ns

SD 2

0:46

0:07

0:24

0:09

0:21

T = 92, ns (P = 0,062)

time in bed 1

8:44

0:10

8:25

0:25

0:18

t = 0,799 (27), ns

SD 1

1:31

0:08

1:06

0:09

0:24

t = 1,702 (27), ns

sleep period 1

7:56

0:12

7:53

0:23

0:02

t = 0,126 (26), ns

SD 1

1:37

0:10

1:11

0:09

0:26

t = 1,583 (26), ns

sleep quality 1

6,6

0,2

8,6

0,1

2,0

t = 6.186 (25) <0.001

SD 1

1,4

0,1

0,8

0,1

0,6

t = 3.254 (25) 0.003

wake after sleep onset 2

0:28

0:06

0:11

0:02

0:17

T = 94 P = 0.056

SD 2

0:30

0:05

0:13

0:02

0:17

T = 95 P = 0.063

sleep efficiency (%) 1

84,4

1,9

91,5

1,4

7.1

t = -2.379 (26) P = 0.025

SD (%) 1

11,3 11,3

1,4

6,6

1,2

4,7

t = 2.142 (26) P = 0.042

  1. 1 Students t-test 2 Mann-Whitney rank sum test Diff. = difference of means between AS subjects and controls ns = no statistically significant difference between AS subjects and controls