Figure 4.

Cumulative survival advantage for defibrillator patients. Histogram of cumulative survival advantage comparing defibrillator patients to control patients. The x-axis shows consecutive triplets of matched patients who are sequenced ordinally by increasing disease severity. The y-axis shows cumulative count of survival advantage for defibrillator patients. Display contains 829 bars for 829 matched triplets (1 defibrillator patient and 2 control patients in each triplet, all with similar disease severity). Results show survival advantage of defibrillator patients mostly explained by individuals with intermediate disease severity.