Figure 2 Proportion of patients of the spinal cord stimulation (SCS) group in the different classes of frequency (upper panel) and duration (mid panel) of angina episodes, and of consumption of sublingual nitrate tablets (bottom panel) before SCS treatment (basal assessment), after 6 months of SCS treatment and the last follow‐up (average 36 months). *p = 0.005, †p = 0.001, ‡p<0.001.