Risk factors for pulmonary infection after thoracoscopic radical resection of lung cancer in elderly patients with diabetes mellitus

Figure 7 Decision curve analysis curves. A: Training group; B: Validation group. All line: Indicates that all patients had postoperative pulmonary infection (PPI); None line: Indicates that none of the patients had PPI. If the Train line was above both the all and none lines, indicating that the model performed better in the probability range.