Figure 4From: Coronary collaterals and risk for restenosis after percutaneous coronary interventions: a meta-analysis Forest plot of risk ratios (RR) for restenosis (≥ 50% diameter stenosis), stratified by clinical setting (stable CAD versus acute MI). Horizontal bars indicate 95% confidence intervals. CAD, coronary artery disease; CCC, coronary collateral circulation; CFI, collateral flow index; CI, confidence interval; MI, myocardial infarction.Back to article page