ABSTRACT
Figure 6 Validation of the ECST model (Table 2) for the 5-year risk of stroke on medical treatment in patients with 50-99% stenosis in NASCET (51). Predicted medical risk is plotted against observed risk of stroke in patients randomized to medical treatment in NASCET (squares) and against the observed operative risk of stroke and death in patients randomized to surgical treatment (diamonds). Groups are quintiles of predicted risk. Error bars represent 95% confidence intervals.
