TABLE 2

Z Scores From the CBCL (Mean = 0; SD = 1) by Sleep Group and Analysis Results

CBCLAge CategoryGood Sleepers (CSHQ <41), Mean (SE)Mild Sleep Problems (CSHQ = 41–55), Mean (SE)Moderate-Severe Sleep Problems (CSHQ > 55), Mean (SE)P
Total CBCLOverall−0.50 (0.06)0.02 (0.05)a0.70 (0.07)a,b<.0001
Age 4–5−0.53 (0.10)0.05 (0.08)a0.64 (0.11)a,b<.0001
Age 6–10−0.47 (0.09)−0.01 (0.07)a0.76 (0.10)a,b<.0001
InternalizingOverall−0.42 (0.07)−0.01 (0.05)a0.57 (0.07)a,b<.0001
Age 4–5−0.50 (0.10)−0.01 (0.09)a0.49 (0.11)a,b<.0001
Age 6–10−0.36 (0.09)−0.02 (0.07)a0.62 (0.10)a,b<.0001
ExternalizingOverall−0.34 (0.07)0.03 (0.06)a0.56 (0.08)a,b<.0001
Age 4–5−0.29 (0.10)0.10 (0.09)a0.49 (0.12)a,b<.0001
Age 6–10−0.37 (0.09)−0.03 (0.07)a0.67 (0.10)a,b<.0001
  • The overall models were adjusted to all covariates including age. The age specific models were covariate adjusted (separate/stratified models by age).

  • a P value < .01 (good compared with either mild or moderate to severe).

  • b P value < .01 (mild compared with moderate to severe).