Monthly Vital Statistics Report, Vol. 18, No. 8, Supplement, November 3, 1969, National Natality Survey Statistics: Educational Attainment of Mothers Having Live Legitimate Births in the United States, 1964-66

摘要

In 1953 the National Natality Survey started collecting data from a sample of all live births registered in the United States. From the certificates which are microfilmed and sent to the National Center for Health Statistics, a sample is selected in such a manner that every State and independent birth registration area is represented, every birth in the United States has an equal chance of being included, and national estimates can be presented for certain demographic, geographic, and personal characteristics of the mothers. Although the sample is selected from all births registered in the United States, only mothers having births which are reported as legitimate (if legitimacy is recorded on the certificate) or inferred to be legitimate (if legitimacy is not recorded on the certificate) are asked to furnish information in the survey. Thus the data presented here are only for mothers having legitimate births.