ALB and neoplasm: There were no significant differences in the baseline, including age, sex, ≥3 comorbidities, trauma, tumor, hormone use, immunosuppressive diseases/drugs, APACHE II score, Glasgow coma score, hemoglobin, bilirubin, creatinine, albumin, surgery history, oxygenation index, and carbapenem exposure rate between the two groups (all P > 0.05).