Kaplan-Meier Explorer
Fit and stratify Kaplan-Meier survival curves, add synthetic censoring, and read a log-rank test alongside a shrinking risk set.
- survival analysis
- Kaplan-Meier
- censoring
- log-rank test
Kaplan-Meier survival curve
All patients
Numbers at risk
| Time (yr) | All patients |
|---|---|
| 0.000 | 260.000 |
| 1.000 | 205.000 |
| 2.000 | 148.000 |
| 3.000 | 114.000 |
| 4.000 | 82.000 |
| 5.000 | 52.000 |
| 6.000 | 31.000 |
Log-rank test
Select a stratification variable to compare groups.
Censoring thins the risk set, it does not remove information cheaply
Additional censoring does not bias the KM estimator (censoring here is independent of prognosis), but it widens the confidence band by shrinking the effective sample size, especially late in follow-up where the risk set is already small.