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The number of legal induced abortions per year per 1000 U.S. women ages 15−44 [14] is given in Table 4.19.
For example, of 1000 women ages 15−44 in 1980, 25 had a legal induced abortion during 1980.
If we assume (1) no woman has more than 1 abortion and (2) the
Table 4.19 Annual incidence of legal induced abortions by time period
Studies have been undertaken to assess the relationship between abortion and the development of breast cancer. In one study among nurses (the Nurses’ Health Study II), there were 16,359 abortions among 2,169,321 person-years of follow-up for women of reproductive age. (Note: 1 person-year = 1 woman followed for 1 year.)
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Fundamentals of Biostatistics
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL