Number Needed to Treat (NNT), Its CI and the Number Needed to Harm
This lesson is part of the course
In this lesson
You translate the trial result into the absolute risk reduction and the number needed to treat, give the NNT a confidence limit, and weigh it against the number needed to harm.
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Lessons in this course
- Sample Size: Two Proportions and Two Means with NORM.S.INV Locked
- Power for a Given Sample Size and a Power Curve Locked
- Block Randomisation: Allocating Patients and Checking Balance Locked
- The Baseline Table: Means, SDs and % by Arm Locked
- Primary Endpoint: Difference in Proportions, 95% CI and p-Value Locked
- Number Needed to Treat (NNT), Its CI and the Number Needed to Harm Locked
- Kaplan-Meier Survival Table by Hand + a Step Chart Locked
- Interim Analysis and Multiplicity: O'Brien-Fleming and Bonferroni Locked