Skip to main content
. Author manuscript; available in PMC: 2020 Mar 21.
Published in final edited form as: Sleep Med. 2017 Mar 6;37:180–186. doi: 10.1016/j.sleep.2017.02.006

Table 5a.

Significant predictors of the DMDD total score using the sleep and psychological problem scores in stepwise regression in general population and ADHD samples.

Predictor variables General population Regression β ADHD Regression β
Sleep problems only
 Sleeps less than other children 0.16
 Trouble falling asleep 0.18 0.16
 Restless or disturbed sleep 0.14 0.08
 Wakes often during night
 Nightmares 0.09
 Talks, walks, or cries out in sleep 0.11
Wakes too early in the morning 0.09
 R2 0.19 0.09
 F 39.5* 20.2*
Sleep and psychological problems
 Sleeps less than other children
 Trouble falling asleep
 Restless or disturbed sleep
 Wakes often during night
 Nightmares
 Talks, walks, or cries out in sleep
 Wakes too early in the morning
 Inattention
 Hyperactivity-impulsivity
 Conduct problems 0.26 0.23
 Anxiety
 Depression 0.19
 Oppositional behavior 0.53 0.45
 R2 0.52 0.55
 F 357.0* 315.2*

Note: Variables without beta values increased explained variance by <3%.

*

p < 0.0001.

ADHD = Attention Deficit Hyperactivity Disorder; DMDD = Disruptive Mood Dysregulation Disorder.