Abstract
Several problems in the interpretation of time series of oral anovulant usage are discussed, among them the shifting marriage-duration distribution over time. Standardization fails to negate the conclusion that the rate of increase in the proportion of women using orals has slackened since January 1966. Separate analyses by duration-specific rates of use and by marriage cohorts show that the two factors sustaining the initial spectacular growth rate in the use of orals-the ever—higher initial use rates of new marriage cohorts and the rapid adoption of orals among earlier cohorts at later durations—have lost their sustaining force. Further analysis indicates that concern over the pill as a health hazard is a major deterrent to substantial increase in oral usage. A final distribution of women by risk status with respect to oral use, and current and prospective oral use, shows that under present circumstances the maximum oral use rate will be considerably less than unity.
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Allingham, J. D., T. R. Balakrishnan, and J. F. Kantner. 1969. Time series of growth in use diffusion of oral anovulants. Population The authors wish to acknowledge the Studies 23:43–51.
Ryder, N. R, and C. F. Westoff. 1967. The United States: the pill and the birth rate, 1959–65. Studies in Family Planning 20.
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Allingham, J.D., Balakrishnan, T.R. & Kantner, J.F. 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. Demography 7, 31–41 (1970). https://doi.org/10.2307/2060020
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DOI: https://doi.org/10.2307/2060020