Although Asian studies showed a trend toward greater improvement in imaging outcomes, this difference did not reach statistical significance when formally tested for interaction ( p for interaction = 0.9201 for MACE and 0.0581 for LLL), suggesting that the overall treatment effect of DCB was largely consistent across populations despite baseline risk factor disparities.
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Drug-Coated Balloons Versus Other Percutaneous Coronary Intervention Strategies in De Novo Coronary Artery Disease: A Systematic Review, Meta-Analysis With Trial Sequential Analysis.
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DCBs demonstrated comparable MACE incidence to DES and a numerically lower risk compared with noncoated devices, with the interaction between comparator type and treatment effect reaching borderline significance ( p for interaction = 0.0513).