Esha Senchaudhuri

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Data Management & Biostatistics I: Improving Trial Quality

Posted by Esha Senchaudhuri

May 22, 2014 4:28:05 PM

This is the first of a three part post in which we will consider (i) improvements to trial quality that result from bundling data management with biostatistics, (ii) reductions in cost and study length that result from bundling data management with biostatistics, and (iii) the contributions of statistical innovation to clinical data management, such as those by Cytel Board member Professor...

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Topics: Data Management, Trial Quality, Clinical Research Services


5 Reasons to Invest in Bayesian Dose-Escalation Methods

Posted by Esha Senchaudhuri

May 8, 2014 7:54:00 AM

( Editor's note: This post has been refreshed in December 2016)

Model based algorithms for Phase I dose-escalation have been in existence for nearly thirty years. Despite guarantees of increased statistical power and greater accuracy, there remains a clear preference for rule based algorithms amongst clinicians. The explanation for this is as old as the models themselves.

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Topics: Oncology, Dose-Escalation, Bayesian Methods, EAST 6.4, East ESCALATE


The Perils of Poor Recruitment

Posted by Esha Senchaudhuri

May 5, 2014 10:21:00 PM

A new JAMA study on discontinued randomized trials in Switzerland, Germany and Canada, reports that poor recruitment accounts for 101 out of 253 trials that were eventually discontinued (or about 10% of the 1017 trials which participated in the study). When restricted to industry-sponsored trials with non-healthy volunteers, poor recruitment accounted for the discontinuation of 40 trials out...

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Topics: Nitin Patel, East, East 6.3, Access to Slides PDF, Recruitment, East Recruit, Sample Size, Promising Zone, sample size re-estimation, Adaptive Clinical Trials


StatXact 25th Anniversary: A Horizon for the Stars

Posted by Esha Senchaudhuri

Apr 21, 2014 3:57:00 PM

The core methodological problem that would eventually spur the development of Cytel’s StatXact software was first posed by Harvard’s Marvin Zelen at a computational seminar in the late 1970s. Zelen, a distinguished professor of statistical sciences and head of the Department of Biostatistics at Harvard University, was also serving as the Director of the Dana Farber Cancer Institute.

The...

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Topics: StatXact, Nitin Patel, Cyrus Mehta, White Paper, Statistics Article full PDF, Oncology, Access to Paper PDF, Exact Tests, Marvin Zelen, Statistical Puzzles


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