ALB and adenocarcinoma: Four out of the five variables were shown to be independent predictors of developing PE recurrence in lung cancer patients, including adenocarcinoma (OR, 2.82; 95% CI, 1.35 - 7.05; p = 0.029), systemic infection (OR, 3.96; 95% CI, 1.47 - 6.51; p = 0.043), D-dimer ≥ 6.5 mg/L (OR, 4.15; 95% CI, 1.83 - 11.85; p = 0.005), and serum albumin level ≤ 26 g/L (OR, 4.91; 95% CI, 1.64 - 12.76; p = 0.013).