ALB and squamous cell carcinoma: For instance, Albumin showed no effect on adenocarcinoma (OR = 1.003, 95% CI: 0.996–1.011, P = 0.380), Cat showed no effect on squamous cell carcinoma (OR = 1.012, 95% CI: 0.984–1.040, P = 0.411), and Lactate had no impact on small cell lung cancer (OR = 0.998, 95% CI: 0.991–1.005, P = 0.590) (Tables S3-S5).