Sample Size: Two Proportions and Two Means with NORM.S.INV
All lessons
- Sample Size: Two Proportions and Two Means with NORM.S.INVFree
- Power for a Given Sample Size and a Power Curve Pro
- Block Randomisation: Allocating Patients and Checking Balance Pro
- The Baseline Table: Means, SDs and % by Arm Pro
- Primary Endpoint: Difference in Proportions, 95% CI and p-Value Pro
- Number Needed to Treat (NNT), Its CI and the Number Needed to Harm Pro
- Kaplan-Meier Survival Table by Hand + a Step Chart Pro
- Interim Analysis and Multiplicity: O'Brien-Fleming and Bonferroni Pro
You are not signed in — the lab works, but your progress is not saved. Start free
Loading the spreadsheet…