The goal of this study is to evaluate the ability of a portable sleep monitor to detect obstructive sleep apnea in children with autism spectrum disorder (ASD). The main study objectives are to:
1. Evaluate the correlation between the obstructive apnea-hypopnea index (OAHI) on a portable sleep monitor and an in-laboratory polysomnogram (PSG);
2. Determine the sensitivity and specificity of a portable sleep monitor to diagnose obstructive sleep apnea (OSA);
3. Evaluate patient and family preferences for sleep testing.