Non Parametric RDA MCF Example
This example appears in the Non-Parametric Recurrent Event Data Analysis article.
A health care company maintains five identical pieces of equipment used by a hospital. When a piece of equipment fails, the company sends a crew to repair it. The following table gives the failure and censoring ages for each machine, where the + sign indicates a censoring age.
Estimate the MCF values, with 95% confidence bounds.
The MCF estimates are obtained as follows:
Using the MCF variance equation, the following table of variance values can be obtained:
Using the equation for the MCF bounds and for a 95% confidence level, the confidence bounds can be obtained as follows:
The analysis presented in this example can be performed automatically in Weibull++'s non-parametric RDA folio, as shown next.
Note: In the folio above, the refers to failures and refers to suspensions (or censoring ages). The results, with calculated MCF values and upper and lower 95% confidence limits, are shown next along with the graphical plot.