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Confidence interval for the odds ratio

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Reference no: EM131932819

1. The data on the following page were taken from a study investigating the associations between spontaneous abortion and various risk factors

Alcohol Pregnancies Spontaneous abortions

0 33164 6793

1-2 9099 2068

3-6 3069 776

7-20 1527 456

21+ 287 98

a. For each level of alcohol consumption, estimate the probability that a woman who becomes pregnant will undergo a spontaneous abortion.

b. For each category of alcohol use, estimate the relative odds of experiencing a spontaneous abortion for women who consume some amount of alcohol versus those who do not consume any.

c. In each case, calculate a 95% confidence interval for the odds ratio.

d. What do you conclude?

Reference no: EM131932819

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