Five Year Life Expectancy Calculator

Disclaimer: The outcome calculator results are estimates based on data consisting of a large number of electronic health records (EHR). All results are provided for informational purposes only, in furtherance of the developers' educational mission, and are not meant to replace the advice of a medical doctor. The developers may not be held responsible for any medical decisions based on this outcome calculator.

Welcome to the five year life expectancy calculator. The calculator is based on data of nearly 7,500 patients aged 50 years or older, with one or more visits to Northwestern Medical Faculty Foundation (NMFF) in a year. NMFF is an urban, academic, multispecialty group practice with EpicCare EHR. Many NMFF patients receive hospital care at Northwestern Memorial Hospital, an urban academic hospital with Cerner EHR. About 1000 attributes were extracted from the EHR to perform predictive data mining and high-dimensional analytics to obtain a highly accurate and clinically actionable 5 year life expectancy model.

The calculator estimates a given patient's chances of surviving at least 5 years from the time of the last hospital visit, using a small non-redundant subset of 24 patient attributes which were carefully selected using attribute selection techniques. To obtain the survival probability, please enter the attribute values below for the patient at the time of the most recent primary care physician visit, and click on the submit button. The pie chart shows the distribution of patients survived and not-survived in the data used to build the predictive model. Patient-specific 5-year survival probability is depicted in the bar chart (middle bar) in context with the survival probability of a healthy and sick patient.

Get 5-year Survival Probability

Developer team: Ankit Agrawal, Alok Choudhary

Collaborators: Jason Mathias, David Baker

Publication(s) and suggested citation:

A. Agrawal and A. Choudhary, “Health Services Data: Big Data Analytics for Deriving Predictive Healthcare Insights,” in Data and Measures in Health Services Research, B. Sobolev, A. Levy, and S. Goring, Eds. Springer US, 2016, pp. 1–17. [url]

A. Agrawal, J. S. Mathias, D. W. Baker, and A. Choudhary, "Five Year Life Expectancy Calculator for Older Adults," 2016, in Proceedings of IEEE International Conference on Data Mining (ICDM) Demo, 2016, pp. 1280-1283. [url] available at

J. S. Mathias, A. Agrawal, J. Feinglass, A. J. Cooper, D. W. Baker, and A. Choudhary, “Development of a 5 year life expectancy index in older adults using predictive mining of electronic health record data,” Journal of the American Medical Informatics Association, vol. 20, pp. e118–e124, 2013. [url]

Center for Ultra-scale Computing and Information Security (CUCIS), EECS Department, Northwestern University, Evanston, IL 60208, USA