| Literature DB >> 437160 |
Abstract
Evidence from more than 14,000 reproductive histories in the Collaborative Perinatal Project of the National Institute of Neurological and Communicative Disorders and Stroke indicates that the risk of spontaneous abortion increases considerably with gravidity. Maternal age, memory errors, and sampling bias related to recurrence risk do not account for the trend. Clustering, or tendency for abortions to follow one another, occurs in histories which include live births.Entities:
Keywords: Abortion, Induced; Abortion, Spontaneous; Age Factors; Blacks; Cultural Background; Demographic Factors; Diseases; Epidemiologic Methods; Ethnic Groups; Fertility; Fertility Measurements; Maternal Age; Parental Age; Parity; Population; Population Characteristics; Population Dynamics; Pregnancy; Pregnancy Complications; Research Methodology; Whites
Mesh：
Year: 1979 PMID： 437160
Source DB: PubMed Journal: Fertil Steril ISSN： 0015-0282 Impact factor: 7.329