Figure 1From: One year follow-up of patients with refractory angina pectoris treated with enhanced external counterpulsationOverall changes in CCS class before (pre-EECP, □) and after (post-EECP, ■) EECP treatment. The figure shows a shift towards improved CCS class after EECP treatment. Values are calculated as percentage of total number of patients and are presented as mean ± SEM.Back to article page