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Kaplan-Meier curves of vessel-oriented composite endpoint (VOCE) occurrence at 1-year follow-up stratified by the best cut-off of post-procedural quantitative flow ratio (μQFR). Blue line means vessels with post-procedure μQFR above 0.89. Yellow line means vessels with values equal to or less than 0.89. The cut-off value of 0.89 was derived from receiver operator characteristic curve analysis for the best prediction of the VOCE; DCB — drug-coated balloon.
