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Table 4 Median (interquartile range) sleep subscale scores, proportions of children with severe sleep problems and statistical comparisons

From: A cross-syndrome cohort comparison of sleep disturbance in children with Smith-Magenis syndrome, Angelman syndrome, autism spectrum disorder and tuberous sclerosis complex

 

ASa

SMS

TSC

ASD

TD

Kruskal-Wallis comparison

Between group comparison corrected to p < .01

df

χ 2

P

Sleep anxiety

–

11.50

(8.75–13.00)

9.00

(7.25–13.00)

13.00

(9.00–14.50)

10.00

(8.00–13.00)

3

2.90

.408

–

Bedtime resistance

10.00

(7.00–13.00)

14.00

(9.00–16.00)

11.00

(10.0–16.75)

15.00

(9.00–18.00)

11.00

(8.00–14.00)

4

12.85

.012

ASD > AS

Sleep onset latency

2.00

(2.00–3.00)

2.00

(1.00–2.00)

2.50

(2.00–3.00)

3.00

(3.00–5.00)

2.00

(1.00–3.00)

4

36.16

< .001

ASD > SMS, AS, TSC, TD

Night waking

7.00

(5.00–8.00)

7.00

(7.00–8.00)

6.00

(3.25–8.00)

7.00

(4.00–9.00)

3.00

(2.00–5.00)

4

51.72

< .001

ASD, SMS, AS, TSC > TD

Sleep-disordered breathing

9.00

(6.00–11.00)

11.50

(9.00–16.00)

5.00

(5.00–10.75)

7.00

(5.00–11.00)

5.00

(5.00–8.00)

4

40.32

< .001

SMS > ASD, AS, TSC, TD

AS > TD

Parasomnia

19.00

(15.00–23.00)

21.50

(18.50–26.75)

19.50

(15.00–23.25)

22.00

(16.00–27.50)

14.50

(11.75–18.00)

4

40.23

< .001

SMS, AS, ASD, TSC > TD

Daytime sleepiness

6.00

(4.00–7.00)

6.00

(6.00–9.00)

6.00

(2.00–6.00)

6.00

(2.00–6.25)

2.00

(2.00–3.00)

4

54.89

< .001

SMS > ASD, TSC, TD

AS, ASD, TSC > TD

Drowsy during the day

2.00

(1.00–3.00)b

4.50

(3.00–5.00)

1.00

(1.00–2.75)

1.00

(1.00–3.00)

1.00

(1.00–1.00)

4

62.80

< .001

SMS > AS, ASD, TSC, TD

AS, ASD, TSC > TD

Co-sleeping

1.5 (1.00–5.00)

1.00 (1.00–4.50)

2.5 (1.00–5.00)

1.00 (1.00–5.00)

1.00 (1.00–2.00)

4

10.58

.032

TSC > TD

Severe night waking (%)

45.70

80.80

45.0

43.30

4.30

4

44.37

< .001

SMS > AS, ASD, TD

TSC, AS, ASD > TD

Severe early morning waking (%)

18.60

73.10

15.0

23.30

2.10

4

50.95

< .001

SMS > TSC, AS, ASD, TD

AS, ASD > TD

Severe settling (%)

4.30

7.70

15.0

30.0

4.30

4

18.56

.001

ASD > AS, TD

  1. aThere were no significant differences on any of the MSPSQ subscales between the AS genetic subtypes
  2. bCo-sleeping item was not administered to 40 children with AS, n = 30 for this item