a.) Estimate the relative odds of developing asthma for boys whose mothers smoke at least one-half pack of cigarettes per day versus those whose mothers smoke less than this.
b.) Estimate the corresponding odds ratio for girls.
c.) Conduct a test of homogeneity to determine whether it is appropriate to combine the information in the two 2x2 tables using the Mantel-Haenszel method. What do you conclude?
d.) If it makes sense to do so, find a point estimate for the summary odds ratio and construct a 95% confidence interval.
e.) What would you do if the results of the test of homogeneity led you to reject the null hypothesis that the odds ratio is identical for boys and girls?