Estimate the rate ratio comparing past users vs. never users, and provide a 95% CI about this

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Estimate the rate ratio comparing past users vs. never users, and provide a 95% CI about this estimate?

Cancer

The data relating oral-contraceptive (OC) use and the incidence of breast cancer in the age group 40ˆ’44 in the NHS are given in Table 14.31.

Table 14.31: Relationship between breast-cancer incidence and OC use among 40- to 44-year-old women in the NHS

Number of Number of OC-use group person-years 4,761 121,091 cases Current users Past users Never users 13 164 113 98,091

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Fundamentals Of Biostatistics

ISBN: 9781305268920

8th Edition

Authors: Bernard Rosner

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Question Posted: May 19, 2018 07:25 AM

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Estimate the rate ratio comparing past users vs. never users, and provide a 95% CI about this

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Number of Number of OC-use group person-years 4,761 121,091 cases Current users Past users Never users 13 164 113 98,091

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Fundamentals Of Biostatistics

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