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Related Experiment Videos

Predictive probability early termination plans for phase II clinical trials.

J Herson

    Biometrics
    |December 1, 1979
    PubMed
    Summary

    This study introduces group sequential designs for phase II clinical trials, enabling early termination of ineffective treatments. These methods use predictive probabilities to efficiently assess experimental treatment efficacy.

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    Area of Science:

    • Clinical Trials Methodology
    • Biostatistics
    • Experimental Therapeutics

    Background:

    • Phase II clinical trials assess experimental treatment effectiveness to justify further study.
    • One-arm trials with dichotomous outcomes require efficient statistical designs.
    • Early termination rules are crucial for managing ineffective treatments.

    Purpose of the Study:

    • To develop group sequential designs for one-arm phase II clinical trials.
    • To utilize predictive probabilities for early stopping rules.
    • To provide a framework for assessing experimental treatment efficacy.

    Main Methods:

    • Employed predictive probabilities based on binomial distribution.
    • Utilized beta and uniform prior distributions for the binomial parameter.
    • Developed group sequential designs for early termination of trials.

    Main Results:

    • Demonstrated the utility of predictive probabilities in group sequential designs.
    • Discussed trial size, power, and average sample size for proposed designs.
    • Provided a process for specifying early termination plans.

    Conclusions:

    • Group sequential designs incorporating predictive probabilities are effective for phase II trials.
    • These designs allow for efficient early termination when treatments are ineffective.
    • The methodology aids in making informed decisions about experimental treatments.

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