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From: Dr. Mitchell
Date: 04 Mar 2007
Time: 17:15:02 -0500
Remote Name: 72.79.152.122
Hi, Chasity. I honestly am not sure if the discussion board allows long enough posts to answer that question (it took us 15 minutes in class on Thursday). I am going to provide a (hopefully) concise, but understandable, answer. If it does not make sense, please try to get the notes from Thursday and/or stop in my office on Monday. An odds ratio provides the likelihood that an event will occur in one group compared to another. In this case, the odds ratio provides the likelihood that someone will develop schizophrenia for every increase in urbanicity level. Those with a broadly defined history of familial liability are 2.65 times more likely to develop schizophrenia for every increase in urbanicity; those with a narrowly defined history are 2.58 times. Those without a familial liability of schizophrenia, but broadly defined other disorders are .34 times more likely to develop schizophrenia for every increase in urbanicity; those narrowly defined are .40 times more likely. We know they are significant because of the results of the Wald statistic test, described in notes c and e of the table.