The end of rapid increase in the use of oral anovulants? Some problems in the interpretation of time series of oral use among married women.
D000328:Adult; D001294:Attitude to Health; D002170:Canada; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D005163:Factor Analysis, Statistical; D005260:Female; D005298:Fertility; D006801:Humans; D007246:Infertility; D008297:Male; D008393:Marriage; D008433:Mathematics; D008875:Middle Aged; D011247:Pregnancy; D012494:Sampling Studies; D013223:Statistics as Topic; D013997:Time Factors; D014481:United States
D003276:Contraceptives, Oral