Figure 1

Cumulative incidence of complications estimated by CR analysis. The cumulative incidence was estimated to be 17.9% (CI 95% = 8.3% to 30.5%) after one, 23.4% (CI 95% = 11.9% to 37.2%) after five years and 27.7% (CI 95% = 14.2% to 43.1%) after ten years.