. Author manuscript; available in PMC: 2019 Feb 1.

Published in final edited form as: J Intellect Disabil Res. 2017 Dec 28;62(2):115–125. doi: 10.1111/jir.12463

Table 1.

Item mean scores for measures of sleep and behaviour.

	Mean (SD)	Range
Sleep measures
Parent report^a
CSHQ Sleep Duration	4.27 (1.80)	3 – 9
CSHQ Parasomnias	9.38 (2.03)	7 – 14
Actigraphy^b
Sleep period (minutes)	553.47 (39.37)	466.43 – 618.64
Sleep efficiency (percent)	87.41 (6.04)	72.49 – 96.41
Parent Behaviour measures
NCBRF (subscale mean 0–3)^c
Conduct Problem	0.54 (0.50)	0 – 2.31
Insecure/Anxious	0.18 (0.20)	0 – 0.81
Vanderbilt (# items endorsed 2 or 3)
Inattention	2.97 (2.86)	0 – 9
Hyperactivity/Impulsivity	1.34 (2.07)	0 – 7
Teacher Behaviour measures
NCBRF (subscale mean 0–3)^c
Conduct Problem	0.49 (0.55)	0 – 2.08
Insecure/Anxious	0.24 (0.26)	0 – 1.13
Vanderbilt (# items endorsed 2 or 3)
Inattention	3.88 (3.11)	0 – 9
Hyperactivity/Impulsivity	1.48 (2.02)	0 – 7

Possible range of scores on Sleep Duration is 3–9. Possible range of scores on Parasomnias is 7–21.

Actigraphy measures are averaged over the week the actigraph is worn.

NCBRF scores reflect the total score divided by the number of items to achieve an item mean.

Note: CSHQ = Children’s Sleep Habits Questionnaire, NCBRF = Nisonger Child Behavior Rating Form