Adjuvant Chemotherapy for High-Risk Pathologic Stage I Non-Squamous NSCLC

Exclusion Criteria

• •1. Prior history of malignant tumors or presence of synchronous other primary malignancy
• •2. Multiple primary lung cancers diagnosed at baseline
• •3. Receipt of any neoadjuvant chemotherapy, radiotherapy, or targeted therapy
• •4. Perioperative death occurring within 30 days after surgery
• •5. Incomplete or missing clinical or pathological information
• •6. Loss to follow-up before the first scheduled surveillance assessment