Key points are not available for this paper at this time.
A. C. Smith, Grad L. Flick, Gregory S. Ferriss, Adolph H. Sellmann, Prediction of Developmental Outcome at Seven Years from Prenatal, Perinatal, and Postnatal Events, Child Development, Vol. 43, No. 2 (Jun., 1972), pp. 495-507
Smith et al. (Thu,) studied this question.