Cancer Weekly
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Adenoma
Studies from University of Arizona have provided new data on adenoma
April 28th, 2009
"The treatment effect of a colorectal polyp prevention trial is often evaluated from the colorectal adenoma recurrence status at the end of the trial. However, early colonoscopy from some participants complicates estimation of the final study end recurrence rate," scientists in the United States report. "The early colonoscopy could be informative of status of recurrence and induce informative differential follow-up into the data. In this article, we use midpoint imputation to handle interval-censored observations. We then apply a weighted Kaplan-Meier method to the imputed data to adjust for potential informative differential follow-up, while estimating the recurrence...
Source: Cancer Weekly (2009-04-28)
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