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Table 5 Spearman’s correlations between overactivity and impulsivity and sleep quality

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

    Anxiety Bedtime resistance Sleep onset latency Night waking Sleep-disordered breathing Parasomnias Drowsiness
ASa Overactivity r s .055 .179 .232 .308 .232 .332
Impulsivity r s .323 − .077 .150 − .031 .181 − .145
SMS Overactivity r s − .182 − .004 .433* .034 .199 .443* − .043
Impulsivity r s .032 .059 .396* .109 .350 .273 .478*
TSC Overactivity r s .057 .329 .247 .725** .576** .628** .477*
Impulsivity r s .162 .480* .262 .785** .271 .362 .244
ASD Overactivity r s − .060 .202 .435* .249 − .089 .497** .045
Impulsivity r s .171 .318 .245 .266 − .009 .199 − .006
  1. *p < .05, **p < .01
  2. aDue to the majority of verbal items on the sleep anxiety subscale, children with AS were not included in this analysis