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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Sleep Med. 2015 Dec 2;21:151–159. doi: 10.1016/j.sleep.2015.11.011

Table 2.

Correlations of Child Demographics and Psychopathology Dimensions with Sleep Functioning of Children with ADHD-I

Variable M ± SD Sleep onset latency Sleep duration Poor sleeper Not enough sleep Hard to get up in morning Not alert after waking Needs weekend sleep to catch up Night Wakings Early AM Wakings
Child Demographics
 Age 8.62 ± 1.17 .09 −.33*** .13 .15 .06 .04 .21* .13 −.01
 Sex -- −.07 .09 −.13 −.13 −.28** −.16 −.12 −.13 −.07
 Race -- −.05 .31*** .07 −.03 −.18* .02 −.05 −.07 .08
Psychopathology Symptoms
 Hyperactivity/Impulsivity 0.83 ± 0.51 .06 .02 .05 .10 .08 .04 .05 .06 .12
 Inattention 2.01 ± 0.48 .05 −.08 .14 .10 .27** .10 .19* .02 −.004
 SCT –Daydreaming 1.30 ± 0.73 .11 .06 .21* .09 .16 .23** .21* .10 .02
 SCT –Working Memory 0.90 ± 0.63 .01 −.10 .04 .02 −.05 .01 .07 .03 −.03
 SCT –Sleepy/Tired 0.50 ± 0.54 .03 −.18* .29*** .24** .26** .38*** .47*** .06 .01
 ODD 0.82 ± 0.53 −.05 −.12 .08 .04 .07 .09 .11 .14 .06
 Anxiety 0.53 ± 0.45 .17* −.19* .33*** .27*** .15 .16 .26** .22** .05
 Depression 0.31 ± 0.38 .06 −.08 .13 .11 .10 .13 .22** .10 −.05

Note. N = 147. For sex, female = 0, male = 1. For race, non-Caucasian = 0, Caucasian = 1. For not enough sleep, 0 = gets enough sleep, 1 = does not get enough sleep. ADHD = attention-deficit/hyperactivity disorder. ODD = oppositional defiant disorder. SCT = sluggish cognitive tempo.

*

p < .05.

**

p < .01.

***

p < .001.