Power Calculation Treatment Retention Survival Analysis SAS Calculator
Introduction & Importance
Power calculation for treatment retention survival analysis using SAS is a crucial step in designing clinical trials…
How to Use This Calculator
- Enter the sample size…
- Set the alpha level…
- Choose the desired power…
- Input the retention rate…
- Click ‘Calculate’…
Formula & Methodology
The formula used in this calculator is based on the two-sample log-rank test…
Real-World Examples
Data & Statistics
| Sample Size | Alpha | Power | Retention Rate | Required Sample Size |
|---|
Expert Tips
- Always validate your assumptions…
- Consider using interim analyses…
Interactive FAQ
What is the alpha level?
The alpha level is the probability of rejecting the null hypothesis when it is true…