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. 2024 Sep 18;24:351. doi: 10.1186/s12883-024-03763-4

Table 2.

ORs and HRs with 95% CIs for the association between base excess and ICU/hospital/28-day/1-year mortality

Regression models Base excess (mmol/L)
-3–3 < -3 > 3
ICU mortality OR (95%CI) P- value OR (95%CI) P- value
Event, n (%) 139 (12.90) 77 (24.40) 26 (14.90)
Univariable model 1 (ref) 2.183 (1.597–2.984) < 0.001 1.183 (0.752–1.860) 0.468
Multivariable Model 1 1 (ref) 1.768 (1.263–2.475) 0.001 1.193 (0.757–1.880) 0.447
Multivariable Model 2 1 (ref) 1.780 (1.264–2.507) 0.001 1.229 (0.775–1.949) 0.381
Multivariable Model 3 1 (ref) 1.795 (1.266–2.546) 0.001 1.293 (0.809–2.066) 0.283
Multivariable Model 4 1 (ref) 1.829 (1.281–2.612) 0.001 1.190 (0.737–1.921) 0.477
Hospital mortality OR (95%CI) P- value OR (95%CI) P- value
Event, n (%) 124 (20.70) 97 (30.70) 34 (19.40)
Univariable model 1 (ref) 1.695 (1.280–2.244) < 0.001 0.923 (0.617–1.379) 0.695
Multivariable Model 1 1 (ref) 1.448 (1.072–1.957) 0.016 0.928 (0.620–1.388) 0.715
Multivariable Model 2 1 (ref) 1.454 (1.069–1.978) 0.017 0.938 (0.622–1.415) 0.760
Multivariable Model 3 1 (ref) 1.460 (1.066–2.001) 0.019 0.955 (0.628–1.452) 0.829
Multivariable Model 4 1 (ref) 1.484 (1.077–2.045) 0.016 0.877 (0.572–1.344) 0.547
28-day mortality HR (95%CI) P- value HR (95%CI) P- value
Event, n (%) 264 (24.40) 117 (37.00) 39 (22.30)
Univariable model 1 (ref) 1.664 (1.339–2.069) < 0.001 0.901 (0.644–1.261) 0.543
Multivariable Model 1 1 (ref) 1.499 (1.187–1.893) 0.001 0.908 (0.649–1.271) 0.573
Multivariable Model 2 1 (ref) 1.489 (1.180–1.879) 0.001 0.895 (0.639–1.253) 0.517
Multivariable Model 3 1 (ref) 1.482 (1.173–1.873) 0.001 0.928 (0.660–1.304) 0.668
Multivariable Model 4 1 (ref) 1.522 (1.200-1.929) 0.001 0.884 (0.628–1.244) 0.480
1-year mortality HR (95%CI) P- value HR (95%CI) P- value
Event, n (%) 389 (36.00) 165 (52.20) 70 (40.00)
Univariable model 1 (ref) 1.678 (1.399–2.014) < 0.001 1.104 (0.856–1.424) 0.446
Multivariable Model 1 1 (ref) 1.468 (1.207–1.785) < 0.001 1.119 (0.867–1.443) 0.387
Multivariable Model 2 1 (ref) 1.483 (1.221–1.802) < 0.001 1.079 (0.836–1.392) 0.559
Multivariable Model 3 1 (ref) 1.405 (1.153–1.711) 0.001 1.052 (0.812–1.363) 0.701
Multivariable Model 4 1 (ref) 1.399 (1.148–1.705) 0.001 1.051 (0.811–1.361) 0.707

Multivariable Model 1 was adjusted for the SOFA score

Multivariable Model 2 was adjusted for model 1 plus age, sex, and ethnicity

Multivariable Model 3 was adjusted for model 2 plus admission diagnoses including diabetes, hypertension, hyperlipemia, malignant neoplasm, chronic kidney disease, heart failure, chronic hepatic failure, chronic respiratory failure, sepsis, disseminated intravascular coagulation, pneumonia and diarrhea

Multivariable Model 4 was adjusted for model 3 plus treatment measures, including vasoactive drugs, sedatives, anticoagulants, mannitol, mechanical ventilation

ICU, intensive care unit; SOFA, Sequential Organ Failure Assessment; OR, odds ratio; HR, hazard ratio; CI, confidence interval