Figure 1. "Back-of-the-envelope" calculation of the number of carotid endarterectomies needed to prevent one major stroke or death.

> Figure 1. "Back-of-the-envelope" calculation of the number of carotid endarterectomies needed to prevent one major stroke or death.

From "Efficacy versus Effectiveness of Carotid Endarterectomy" Effective Clinical Practice, January/February 1999. 1:30-36.

Figure 1. Back-of-the-envelope calculation of the number of carotid endarterectomies needed to prevent one major stroke or death.

Figure 1. "Back-of-the-envelope" calculation of the number of carotid endarterectomies needed to prevent one major stroke or death.

ACP American College of Physicians - Internal Medicine - Doctors for Adults