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1. The data on the following page were taken from a study investigating the associations between spontaneous abortion and various risk factors
a. For each level of alcohol consumption, using Stata, 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?