From: The genetics of feto-placental development: A study of acid phosphatase locus 1 and adenosine deaminase polymorphisms in a consecutive series of newborn infants
Mean
Proportion
S.E.
Maternal Age (yrs)
28.5
0.3
Gestational Age (wks)
39.6
0.12
Birth Weight (gr)
3269
29
Placental Weight (gr)
578
8
Smokers
38%
Male Infant
54%