Prognostic significance of emergency department bypass in stable and unstable patients with ST-segment elevation myocardial infarction.

In contrast to the first model, direct transfer completely lost its significance in predicting outcome (OR 0.88, 95% CI 0.74–1.04, P =0.1313), whereas in this model shorter door-to-balloon time was a highly significant predictor of better survival ( P <0.0001; Table 4 ).

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