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Table 3 Logistic regression analysis evaluating outcomes according to plasma-to-RBC ratio categories

From: Association between the plasma-to-red blood cell ratio and survival in geriatric and non-geriatric trauma patients undergoing massive transfusion: a retrospective cohort study

Plasma-to-RBC ratio category

Non-geriatric group

Geriatric group

n

Age: 16–64 years

p

n

Age: ≥ 65 years

p

OR (95% CI)

OR (95% CI)

In-hospital mortality

     

 Low

4239

1.38 (1.22–1.56)

 < 0.001

642

0.84 (0.62–1.12)

0.233

 Medium

6938

1.00 [Reference]

 

897

1.00 [Reference]

 

 High

1064

1.21 (0.98–1.49)

0.149

114

1.34 (0.80–2.27)

0.276

24-h mortality

      

 Low

4239

1.75 (1.50–2.00)

 < 0.001

642

1.11 (0.79–1.55)

0.522

 Medium

6938

1.00 [Reference]

 

897

1.00 [Reference]

 

 High

1064

0.92 (0.71–1.18)

0.57

114

0.85 (0.42–1.63)

0.657

Adverse events

      

 Low

4239

0.70 (0.62–0.80)

 < 0.001

642

0.6 (0.43–0.84)

0.002

 Medium

6938

1.00 [Reference]

 

897

1.00 [Reference]

 

 High

1064

1.16 (0.96–1.39)

0.111

114

0.79 (0.43–1.40)

0.438

  1. Patients were stratified according to plasma-to-RBC ratio as follows: low < 0.5, medium 0.5–1.0, and high ≥ 1.0. The model was adjusted for age, sex, comorbidities, injury mechanisms, total prehospital time, Revised Trauma Score, Injury Severity Score, and Abbreviated Injury Scale score, in each body region (head, neck, thorax, abdomen, upper extremities, and pelvis/lower extremities), trauma center levels, and hospital types (university, community, and non-teaching). Adverse events; cardiac failure, respiratory failure, acute renal failure, thrombotic events, and sepsis
  2. RBC red blood cell