Factors affecting response to postal questionnaires.
D000328:Adult; D000368:Aged; D001900:Boston; D003276:Contraceptives, Oral; D004522:Educational Status; D004812:Epidemiologic Methods; D005006:Ethnicity; D005260:Female; D006801:Humans; D008404:Massachusetts; D008875:Middle Aged; D010551:Personality; D011177:Postal Service; D012098:Reproduction; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires
D003276:Contraceptives, Oral