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Figure 2 Observed and expected survival in the ablation and medical groups. The observed survival among ablation patients did not differ (p = 0.55) from the expected (A) and was significantly longer than that observed in the medical group, whose survival proved worse than that expected (B). Observed survival probabilities were 98%, 95%, and 92% at one, two, and three years, respectively, among ablated patients, and 96%, 90%, and 86%, respectively, among those medically treated (p < 0.001).
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