Compute the group size and the proportion of subjects

Reference no: EM13953046

The relationship between prior condom use and tubal pregnancy was assessed in a population-based case-control study at Group Health Cooperative of Puget Sound during 1981-1986. The results are shown in Table E1.3. Compute the group size and the proportion of subjects in each group who never used condoms.

TABLE E1.3
Condom Use	Cases	Controls
Never	176	488
Ever	51	186

Reference no: EM13953046

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