Response Evaluation Criteria in Solid Tumors (RECIST) scores. Clinical trials in other areas would have a different response variable, but the ideas are the same.Ĭlinical researchers use a bar chart to show the distribution of the response variable because the color of the bar can encode additional characteristics for each patient, such as the patient's Tumors that grow have a positive change a reduction in size corresponds to a negative value between 0% and -100%. The percent change is plotted for each patient, who are usually ordered from worst (the tumor grew) to best (the tumor vanished). In oncology trials, the response variable might be the percent change in the size of a tumor from the individual's baseline value at the start of the trial. In clinical trials, a waterfall plot is often used to indicate how patients in the study responded to treatment.
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