Selection in Recruiting Patients via a Random Sample of Gynecologists
In 1977, a field study was started, in which randomly selected gynecologists should recruit five pairs of patients each, a pair consisting of a pilltaker and an age-matched control between 16 and 35 years. 51.9% of the physician sample contributed a total of 373 patient pairs. Each patient should get a medical examination and complete a questionnaire at the start and after one year. Complete information was received in 59.2% of all pairs. Adherence to the recruitment criteria was fairly close at the beginning. After one year 27.5% of the pairs were split up by a change of contraception. Two major features of the study design should therefore be newly assessed in the future: If possible, one should recruit individuals rather than pairs. Social data should be collected through a separate organization.
KeywordsEurope Stratification Smoke
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- (1).Kellhammer U. A field survey of oral contraceptives with patient pairs out of gynecological practices (Pilot III). In: Kellhammer U, Tiberla K (Eds). Long-term studies on side effects of contraception - state and planning. Lecture Notes in Medical Informatics, vol 3, Springer, Berlin-Heidelberg-New York, 1978; 175–183Google Scholar
- (2).Kellhammer U. The Pilot-I Study: Analysis of drop-outs and some results of a pilltaking typology. In: Kellhamer U, Tiberla K (Eds). Long-term studies on side-effects of contraception - state and planning. Lecture Notes in Medical Informatics, vol 3, Springer, Berlin- Heidelberg-New York, 1978; 93–114Google Scholar
- (3).Kay CR. Oral Contraceptives and Health. An Interim Report from the Oral Contraception Study of the Royal College of General Practitioners, Pitman Medical Publishing, London, 1974Google Scholar