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Figure 3 CCS Functional Class at Baseline and Follow-Up

At the same time points, angina status based on Canadian Cardiovascular Society (CCS) classification was maintained through 12 months of observation. Patients after PCI had more angina after 1 month and after 6 months (Mann-Whitney U test: p = 0.01) but had similar rates of angina as CABG patients after 12 months (p = 0.11). ANOVA = analysis of variance; other abbreviations as in Figures 1 and 2.