Newborn effects that may be precipitated by Methamphetamine, such as fetal heart rate decelerations tachypnea, and tachypnea, were not significantly increased. There was also no increase in the frequency of major anomalies and /or any congenital anomaly. Our study had about 39% statistical power to detect a fourfold increase in the frequency of congenital anomalies. However, the power of these data to detect an increased frequency was limited, because a 12-fold increase is the smallest increase that would have significant statistical power.
Infant size differed significantly between those whose mothers abused Methamphetamine and the control group.