(b) [3 marks] Use McNemar's Test to test the significance of the association between non- allopathic drug use and CKD. Be sure to clearly state the null and alternative hypotheses, give the formula for the test statistic, calculate its value and find the p-value. What is the conclusion of the test? (c) [3 marks] Show that the formula for the matched pair Odds Ratio can be derived from the Mantel-Haenszel Odds Ratio where the data is stratified by pair. Hint: Consider the four types of possible matched pairs (and their corresponding unmatched 2 x 2 table) and determine what each contributes to the Mantel-Haenszel Odds Ratio. Then sum over the number of each type of matched-pair (i.e. e, f, g, h from a general matched 2 x 2 table)