fig5

Figure 5. Kaplan-Meier curve showing primary- and primary-assisted patency rates. Solid and dotted lines indicate primary patency and primary-assisted patency, respectively. Vertical lines on both lines indicate censored observations. At 1, 3, 5, and 10 years after the first balloon angioplasty the primary patency rates were 80%, 76%, 73%, and 67%, respectively, and the primary-assisted patency rates were 100%, 100%, 100%, and 96% respectively