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Distribution of parent-reported sleep duration. Plotted is the distribution of sleep durations that were reported in the Simons Simplex Collection medical histories for children with ASD (n = 2,714). The mean reported sleep duration was 555 +/−76 minutes. The frequency of sleep duration in the lower 5th (≤420 minutes) and upper 95th (≥660 minutes) percentile of the distribution are indicated with brackets.
