Calculating a Nonparametric Estimate and Confidence Interval Using SAS . Software
نویسنده
چکیده
In clinical trials nonparametric analysis methods are sometimes used to assess the differences between treatment groups. Most people use either the NPAR1WAY procedure or the FREQ procedure to perform nonparametric analysis. However, no procedures currently exist within SAS software to produce a nonparametric estimate of the difference between treatment groups or a confidence interval to assess the magnitude of that difference. This paper describes the process for calculating the nonparametric estimate of the difference and the confidence interval to assess the magnitude of that difference with the use of the SQL procedure statement and a few DATA steps.
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