Optimal cut-off (maximum value of Youden’s J index = sensitivity + specificity– 1) with the associated sensitivity, specificity and overall accuracy for selected echocardiographic variables for prediction of in-hospital mortality using univariable logistic regression.

Optimal cut-off (maximum value of Youden’s J index = sensitivity + specificity– 1) with the associated sensitivity, specificity and overall accuracy for selected echocardiographic variables for prediction of in-hospital mortality using univariable logistic regression.

针对用于预测院内死亡率（in-hospital mortality）的经筛选超声心动图变量（echocardiographic variables），采用单变量logistic回归（univariable logistic regression）分析得到其最佳截断值（即尤登J指数（Youden’s J index）=灵敏度+特异度-1的最大值），并给出对应的灵敏度、特异度及总准确率。