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The receiver operating characteristic (ROC) curve for the multivariate binary logistic regression model. The ROC curve was used to assess the accuracy of the obtained multivariate binary logistic regression model to predict the requirement for oxygen therapy. The area under the ROC curve (AUC) was 0.962 (95% CI: 0.927–0.997, P < 0.001). AUC, area under the receiver operating characteristic curve; ROC, receiver operating characteristic.
