title: A comparison of ration and regression methods for assessing the proportionality of newborn babies.
abstract: Index and regression methods of selecting babies whose heads are out of proportion to their body weight are examined and compared. The ratios head circumference3/birthweight and head circumference3/birthweightP (where P is a power found by regression methods) are used, and the regression of head circumference 3 on birthweight is calculated. The problems associated with all three methods are discussed, and the power index is found to be the most satisfactory method.
mesh_terms: D001724:Birth Weight; D002508:Cephalometry; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012044:Regression Analysis; D013223:Statistics as Topic