Download e-book for iPad: Categorical Data Analysis Using the SAS System by Maura E. Stokes

By Maura E. Stokes

ISBN-10: 0471224243

ISBN-13: 9780471224242

In addition to offering an invaluable dialogue of specific information research thoughts, this ebook indicates how you can observe those equipment with the SAS process. The authors contain sensible examples from a huge variety of purposes to demonstrate using the FREQ, LOGISTIC, GENMOD, and CATMOD techniques in various analyses. in addition they talk about different tactics equivalent to PHREG and NPAR1WAY.

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0001 Continuity Adj. 7087 and Ô ¼ ¼¼¼½. Both of these statistics are clearly significant. There is a strong association between treatment and outcome such that the test treatment results in a more favorable response outcome than the placebo. 1 show that the test treatment resulted in 67% favorable response and the placebo treatment resulted in 25% favorable response. ” This statistic, often written ÉÄ , is asymptotically equivalent to É and ÉÈ . The statistic ÉÄ is described later in chapters on modeling; it is not often used in the analysis of ¾ ¢ ¾ tables.

1, the row marginal totals Ò½· and Ò¾· are fixed since 60 patients were randomly allocated to one of the treatment groups and 64 to the other. The column marginal totals can be regarded as fixed under the null hypothesis of no treatment difference for each patient. Then, given that all of the marginal totals Ò½· , Ò¾· , Ò·½ , and Ò·¾ are fixed under the null hypothesis, the probability distribution from the randomized allocation of patients to treatment can be written Pr Ò½· Ò¾· Ò·½ Ò·¾ Ò Ò½½ Ò½¾ Ò¾½ Ò¾¾ Ò which is the hypergeometric distribution.

The FREQ procedure computes McNemar’s Test with the AGREE option in the TABLE statement (see Chapter 5 for other analyses available with the AGREE option for tables of other dimensions). The following SAS statements request McNemar’s test. The ODS SELECT statement is used to restrict the output to that test. 18 displays the output that is produced. previously. 1967 Note that exact Ô-values are also available for McNemar’s test. You would include the statement exact mcnem; in your PROC FREQ invocation.

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Categorical Data Analysis Using the SAS System by Maura E. Stokes


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