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Table 3 Bivariate correlations among sleep measures, CBCL T scores, and MSEL T scores

From: Sleep characteristics and problems of 2-year-olds with Williams syndrome: relations with language and behavior

 

Sleep latency

Nighttime sleep duration

SRBD score

Sleepiness score

CBCL Depressive Problems T

.34*

− .31*

.63**

.52**

CBCL Anxiety Problems T

.04

− .27*

.18

− .06

CBCL Autism Spectrum Problems T

.04

− .08

.31*

.15

CBCL Attention/Hyperactivity Problems T

.01

− .19

.58**

.50**

CBCL Oppositional Defiant Problems T

− .15

.12

.35*

.32*

CBCL Stress Problems T

.05

− .08

.48**

.37*

CBCL Sleep Problems T

.34*

− .30*

.51**

.46**

CBCL Internalizing Problems T

.08

− .22

.45**

.17

CBCL Externalizing Problems T

.03

− .02

.55**

.50**

CBCL Total Problems T

.18

− .20

.67**

.50**

MSEL Expressive Language T

< − .01

.17

− .18

− .10

MSEL Receptive Language T

− .06

.16

− .29*

− .15

MSEL Visual Reception T

.07

− .08

− .26

− .19

Sleep latency

 

− .41**

.20

.05

Nighttime sleep duration

  

− .21

− .01

SRBD score

   

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Sleepiness score

    
  1. N = 96 for all correlations except those including Sleepiness score, for which N = 70
  2. CBCL Child Behavior Checklist, MSEL Mullen Scales of Early Learning, SRBD Sleep-Related Breathing Disorders
  3. *p < .01, **p < .001