Survival curve of survival following adult cardiac surgery from a single institution™s population where patients have been separated based on their Zip Code. Survival curves are nearly identical, and statistically insignificant, for the three groups shown.

FIGURE 5-5An analysis of survival following adult cardiac surgery from a single institution in a patient population operated on between July 2002 and July 2007 is shown

Periprocedural clinical data from the Society of Thoracic Surgeons National Cardiac Database, Social Security Administration Death Index data for long-term mortality outcomes, and U.S. census data for socioeconomic status based on the ZIP code in which the patients resided were linked at the patient level. The covariates were separated by the percent of population with a ZIP code at or below the poverty line from all ZIP codes within eastern North Carolina. This relatively simple analysis highlights the ability to integrate data at the local level.

NOTE: CI = confidence interval, HR = hazard ratio.

From: 5, Implementation Priorities

Cover of Learning What Works
Learning What Works: Infrastructure Required for Comparative Effectiveness Research: Workshop Summary.
Institute of Medicine (US) Roundtable on Value & Science-Driven Health Care.
Washington (DC): National Academies Press (US); 2011.
Copyright © 2011, National Academy of Sciences.

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