Survival Analysis Sample Size Calculator
Introduction & Importance
Survival analysis sample size calculation is a critical step in designing clinical trials…
How to Use This Calculator
- Enter the desired significance level (α).
- Enter the desired power (1 – β).
- Choose an effect size.
- Click “Calculate”.
Formula & Methodology
The sample size calculation is based on the formula…
Real-World Examples
Data & Statistics
| Effect Size | α = 0.05, Power = 0.8 | α = 0.05, Power = 0.9 |
|---|---|---|
| 0.2 | 186 | 246 |
| 0.3 | 87 | 115 |
| 0.4 | 45 | 59 |
Expert Tips
- Consider using a higher power for rare diseases.
- Adjust the effect size based on the expected treatment effect.
Interactive FAQ
What is the default effect size?
The default effect size is 0.3.
Can I change the significance level?
Yes, you can change the significance level (α) to any value between 0.01 and 0.1.