Case study of accrual in a clinical trial, part 2 (created 2007-10-09)

I received additional accrual data on a clinical trial I am monitoring. To review, the trial started on August 28, 2007 and will continue until January 31, 2008, for a total of 22 weeks. The researcher thinks that he might be able to get 3 patients per week over a 22 week trial (66 total), but he is very confident that he would get at least 2 patients per week (44 total). The confidence in the estimate of 3 patients per week was rated as 5 on a 10 point scale. After one week, a single patient has entered the study. No patients enter on weeks 2, 3, or 4. On week 5, three patients enter the study. On week 6, one more patient enters for a total of 5 patients.

This webpage was originally published at the StATS website, which is currently unavailable. There is a dispute about the ownership of these pages, so I am only able to include a brief excerpt from this page.

This work is licensed under a Creative Commons Attribution 3.0 United States License. This page was written by Steve Simon and was last modified on 2008-11-10. Need more information? I have a page with general help resources. You can also browse for pages similar to this one at Category: Accrual problems in clinical trials.