Question: Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size /

Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size / Decrease sample size Increase sample size / Decrease sample size : Increase power to 90% : Decrease power to 70% : Decrease Type 1 error to 0.01. : Increase Type 1 error to 0.10. : Detect a 5% difference in four-year disease-free survival : Detect a 1% difference in four-year disease-free survival

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