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Try to understand How McNemar's Test for Matched Pairs works.....

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Testing a treatment in the article "eradication of Small Intestinal Bacterial Overgrowth Reduces Symptoms of Irritable Bowel Syndrome" (pimentel, chow and Lin, American Journa of gastroenterology, VOl 95, No 12), the authors include a discussion of whether antibiotic treatment of bacteria overgrowth reduces intestinal complaints. McNermar's test was used to analyze result for those subjects with eradication of bacterial overgrowth. Using the data in the given table, does the treatment appear to be effective against abdominal pain?
Abdominal Pain Before Treatment
Yes NO
Abdominal pain 11 1
after treatment 14 3

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McNemar's Test for Matched Pairs works.....
Testing a treatment in the article "eradication of Small Intestinal Bacterial Overgrowth Reduces Symptoms of Irritable Bowel Syndrome" (pimentel, chow and Lin, American Journa of gastroenterology, VOl 95, No 12), the authors include a discussion of whether antibiotic treatment of bacteria overgrowth reduces intestinal complaints. McNermar's test was used to analyze result for those subjects with eradication of bacterial overgrowth. Using the data in ...

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