First births to older mothers, 1970-86.
Ventura
S J
SJ
Division of Vital Statistics, National Center for Health Statistics, Hyattsville, MD 20782.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D004493:Education; D005260:Female; D006801:Humans; D008423:Maternal Age; D010298:Parity; D018566:Pregnancy, High-Risk