Interest is the difference between the first and second measure. Individual in two areas such as one treatment in one eye and another treatmentįor another eye (or leg, or arm, etc). In a before – after fashion, or in a design where a treatment is administeredįor a time, there is a washout period, and another treatment is administered (in (also called a dependent samples t-test). The same subjects (or matched subjects) the proper analysis is a paired t-test Include how-to instructions for SAS Softwareĭependent Samples: When data are collected twice on Pharmaceutical, Clinical Trials, Marketing or Scientific Research. Interpretation of standard statistical analysis techniques for Medical, These SAS statistics tutorials briefly explain the use and See for files mentioned in this tutorial © TexaSoft, 2007-12
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