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Interpretation of nonfatal events after cardiac surgery: actual versus actuarial reporting
1Providence Health System, Portland, OR, USA. ggrunkemeier@providence.org
The Journal of Thoracic and Cardiovascular Surgery
|August 2, 2001
Abstract
Objective:
To describe the cumulative incidence (actual) method of analysis and to contrast it with the Kaplan-Meier method.
Method:
We use data on porcine valve replacement to illustrate these two statistical techniques.
Results:
The "actual" analysis estimates the percentage of events expected to occur. The percentage given by the Kaplan-Meier method is much larger.
Conclusion:
Actual (cumulative incidence) analysis is preferred for estimating the probability of occurrence of a nonfatal time-related event.