Sample size calculation for small sample single-arm trials for time-to-event data: Logrank test with normal approximation or test statistic based on exact chi-square distribution? - ScienceDirect
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Sample Size
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Sample size calculation in randomised phase II selection trials using a margin of practical equivalence | Trials | Full Text
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Sample size calculation in randomised phase II selection trials using a margin of practical equivalence | Trials | Full Text
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Smaller sample sizes for phase II trials based on exact tests with actual error rates by trading-off their nominal levels of significance and power | British Journal of Cancer