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Shown are the Griffiths Performance (A) and Hearing and Speech (B) DQs versus the individual AMA slope values at four months of age and ABR group. Filled circles are ASD cases and open circles are Not-ASD cases. Fitted curves are based on a LOWESS function with a stiffness of 0.9. For Hearing and Speech, there is a sharp discontinuity near an AMA Slope of 0.1 for the Abnormal ABR group.
