In the article ?Eradication of Small Intestinal Bacterial Overgrowth Reduces Symptoms of Irritable Bowel Syndrome? (Pimentel, Chow, and Lin, American Journal of Gastroenterology, Vol. 95, No. 12), the authors include a discussion of whether antibiotic treatment of bacteria overgrowth reduces intestinal complaints. McNemar?s test was used to analyze results 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?

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Abdominal Pain Before Treatment? Yes No Yes 11 1 Abdominal pain after treatment? No 14 3