Lung cancer is a major global cause of mortality, reportedly accounting for 1.7 million deaths each year. The most common form of lung cancer is non-small-cell lung cancer (NSCLC), and early-stage NSCLCs can often be surgically resected. Unfortunately, some patients still experience poor outcomes after surgical resection, prompting further research on the relationship between a patient’s preoperative status and the likelihood of good postoperative outcomes.