title: Seasonal patterns of spontaneous abortion.
abstract: The presence of a seasonal pattern of spontaneous abortion in the United States was found using data from the two most recent cycles of the National Survey of Family Growth (USA). The pattern was bimodal with peaks in March and August.
authors.affiliation: Portland State University, Oregon.
authors.forename: J E
authors.initials: JE
authors.lastname: Kallan
authors.forename: E A
authors.initials: EA
authors.lastname: Enneking
mesh_terms: D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000293:Adolescent; D000328:Adult; D003625:Data Collection; D005260:Female; D005306:Fertilization; D005583:Fourier Analysis; D006801:Humans; D011247:Pregnancy; D012307:Risk Factors; D012621:Seasons; D014481:United States