Changes in the frequency of marital intercourse from panel data.
Three waves of panel data from a sample of urban U.S. couples in which the wife was under 30 years of age at the first interview show that frequency of intercourse declined about 25% in a 4-year period. Declines were greatest among those with the shortest length of marriage.
D000328:Adult; D000375:Aging; D003075:Coitus; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage