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Kaplan-Meier for Multiple Censored Data |
This example validates the calculation for the Kaplan-Meier (KM) estimator for multiple censored data.
Reference Case
Table 3.2 on page 54 in the book Statistical Methods for Reliability Data by Dr. Meeker and Dr. Escobar, John Wiley & Sons, 1998.
Data
| Number in State | Last Inspected (Year) | State F/S | State End Time (Year) |
|---|---|---|---|
| 4 | 0.01 | F | 1 |
| 99 | 0.01 | S | 1 |
| 5 | 1 | F | 2 |
| 95 | 1 | S | 2 |
| 2 | 2 | F | 3 |
| 95 | 2 | S | 3 |
Result
| Number in State | Last Inspected (Year) | State F/S | State End Time (Year) | K-M Estimator (%) |
|---|---|---|---|---|
| 4 | 0.01 | F | 1 | 1.33 |
| 5 | 1 | F | 2 | 3.84 |
| 2 | 2 | F | 3 | 5.82 |
Results in Weibull++
The coordinates of each point in the following plot shows the failure time and the corresponding Kaplan-Meier estimator of the probably of failure at each failure time.
