Figure 2.

The box plots show changes in internalizing, externalizing, and total scores on the Child Behavior Checklist (CBCL) before and after 3 months of positive airway pressure (PAP). There were significant improvements in internalizing and total behavior symptom scores, but not in externalizing symptoms. The box represents the interquartile ranges, which contains 50% of all values. The line across the box indicates the median. The whiskers extend from the box to the 90th and 10th percentiles, excluding outliers. Outliers (open circles) are defined as cases outside the 90th and 10th percentiles.