Correlation of serum albumin level on postoperative day 2 with hospital length of stay in patients undergoing emergency surgery for perforated peptic ulcer

Figure 1 Receiver operating characteristic curves showing sensitivity and specificity of albumin in predicting hospital stay ≤ 7 d. A: Receiver operating characteristic (ROC) curve was plotted and exhibited an area under the curve (AUC) of 0.86; B: Excluding death due to myocardial infarction and voluntary discharge due to hemiplegia and coma during hospitalization. The ROC curve was plotted with an AUC of 0.93. ROC: Receiver operating characteristic.