Monitoring of large randomised clinical trials: a new approach with Bayesian methods.
BACKGROUND: In judging whether or not to continue enrolling patients into a randomised clinical trial, most data-monitoring and ethics committees (DMECs) rely on the p value for the difference in effect between the study groups. In the 1990s, two randomised controlled trials-one in patients with lung cancer and one in those with head and neck cancer-were instead monitored by Bayesian methods. We assessed the value of this approach in the monitoring of these clinical trials. METHODS: Before t...Expand abstract
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