Fig 1.
AG: anion gap. ICU: intensive care unit. ICD10: tenth version of the International Classifcation of Disease. ICD9: ninth version of the International Classifcation of Disease.
Table 1.
Characteristics of the study population between in-hospital survival and in-hospital mortality group.
Fig 2.
Receiver-operating characteristic curves of the SOFA, ACAG, ALB and AG to predict in-hospital mortality among trauma patients.
SOFA: Sequential Organ Failure Assessment. ACAG: albumin corrected anion gap; ALB: albumin; AG: anion gap.
Fig 3.
The best cutoff value of ACAG was taken by the K-M curve with log-rank test.
ACAG: albumin corrected anion gap.
Fig 4.
Jitter plot of distribution of propensity scores (A). Histogram of distribution of propensity scores (B).
Fig 5.
Standardized mean differences (SMDs) of variables before and after matching.
MAP: mean arterial pressure. Wbc: white blood cell. ACAG: albumin corrected anion gap. INR: international normalized ratio. PT: prothrombin time. GCS: Glasgow Coma Scale. PTT: partial thromboplastin time. SOFA: Sequential Organ Failure Assessment. SAPS Ⅱ: Simplified Acute Physiology Scores Ⅱ. APS Ⅲ: Acute Physiology Score Ⅲ. OASIS: Oxford Acute Severity of Illness Score.
Table 2.
Characteristics of the study population were compared between low and high ACAG groups before and after PSM.
Table 3.
Subgroup analysis of the association between different levels of ACAG and in-hospital mortality.
Table 4.
Cox proportional hazard analysis of ACAG of in-hospital mortality in patients with trauma.
Fig 6.
Kaplan—Meier survival curve of post-trauma patients with low level group of ACAG (blue curve. ACAG<20.375mmol/L) and high level group of ACAG (red curve. ACAG≥20.375mmol/L) at in-hospital(A, D), 30-day(B, E), 90-day(C, F) follow-up. (A-C)Reflect the results before PSM. (D-F)Reflect the results after PSM. ACAG: albumin corrected anion gap. PSM: propensity score matching.