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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