Variations in the reporting of gestational age at induced termination of pregnancy

Utilizing the 1980 Induced Abortion File maintained by the National Center for Health Statistics, we compared gestational age from date of last normal menses and the physician-based estimate of gestational age. An average .51 week difference between the two methods was observed. Beyond seven weeks g...

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Bibliographic Details
Published in:American journal of public health (1971) 1989-05, Vol.79 (5), p.603-606
Main Authors: Petersen, D J, Alexander, G R, Powell-Griner, E, Tompkins, M E
Format: Article
Language:English
Subjects:
Abortion, Induced
African Americans
Biological and medical sciences
Birth control
European Continental Ancestry Group
Female
Gestational Age
Gynecology. Andrology. Obstetrics
Humans
Induced abortion. Therapeutic abortion
Medical sciences
Menstruation
Methods
Pregnancy
United States
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Summary:Utilizing the 1980 Induced Abortion File maintained by the National Center for Health Statistics, we compared gestational age from date of last normal menses and the physician-based estimate of gestational age. An average .51 week difference between the two methods was observed. Beyond seven weeks gestation, the date of last normal menses value was underestimated by the physician-based estimate with a markedly greater divergence after 20 weeks. A relatively greater underestimation of the date of last normal menses interval by the physician estimate was apparent for Whites after 13 weeks. The data of last normal menses value for non-state residents was overestimated across the entire range of the date of last normal menses gestational age distribution until 21 weeks.
ISSN:0090-0036
1541-0048
DOI:10.2105/AJPH.79.5.603