Table 3. Conversion from points to risk for the intermittent claudication score system.

To obtain a risk estimate, the obtained score is linked with a risk estimate.

score	estimate of 4-year probability
< 10	< 1%
10–12	1%
13–15	2%
16–17	3%
18	4%
19	5%
20	6%
21	7%
22	8%
23	10%
24	11%
25	13%
26	16%
27	18%
28	21%
29	24%
30	28%