Table 1. Characteristics and outcomes of patients who received and did not received massive blood transfusion.
The P-values were calculated using chi-square test for categorical variables as well as unpaired Student t-test and Mann-Whitney U test for normally and non-normally distributed continuous data, respectively.
| Variables |
MT (Yes) n = 82 |
MT (No) n = 7,875 |
P-value | ||
|---|---|---|---|---|---|
| Age (years) | 53.9 | ±19.5 | 52.7 | ±19.1 | 0.561 |
| Gender, n (%) | 0.005 | ||||
| Male | 57 | (69.5) | 4224 | (53.6) | |
| Female | 25 | (30.5) | 3651 | (46.4) | |
| Co-morbidities, n (%) | |||||
| DM | 11 | (13.4) | 1170 | (14.9) | 0.759 |
| HTN | 14 | (17.1) | 2179 | (27.7) | 0.034 |
| CAD | 6 | (7.3) | 262 | (3.3) | 0.058 |
| CHF | 0 | (0.0) | 54 | (0.7) | 0.677 |
| CVA | 2 | (2.4) | 280 | (3.6) | 0.771 |
| ESRD | 1 | (1.2) | 119 | (1.5) | >0.99 |
| Field SBP (mmHg) | 144.4 | ±31.1 | 145.5 | ±30.5 | 0.739 |
| ER SBP (mmHg) | 142.1 | ±31.0 | 153.3 | ±32.5 | 0.002 |
| Field HR (beats/min) | 93.3 | ±21.5 | 57.9 | ±16.3 | 0.003 |
| ER HR (beats/min) | 98.6 | ±27.5 | 85.7 | ±16.5 | <0.001 |
| Field SI | 0.7 | ±0.2 | 0.6 | ±0.3 | 0.271 |
| ER SI | 0.7 | ±0.3 | 0.6 | ±0.2 | <0.001 |
| ΔSI | 0.1 | ±0.3 | -0.1 | ±0.3 | <0.001 |
| ISS (median, IQR) | 27 | (21–34) | 9 | (4–10) | <0.001 |
| Mortality, n (%) | 39 | (47.6) | 141 | (1.8) | <0.001 |
CAD = coronary artery disease; CHF = congestive heart failure; CI = confidence interval; CVA = cerebral vascular accident; DM = diabetes mellitus; EMS = Emergent Medical Service; ER = Emergency room; ESRD = end-stage renal disease; HTN = hypertension; HR = Heart Rate; IQR = interquartile range; ISS = injury severity score; MT = massive transfusion; SBP = Systolic Blood Pressure; SI = shock index; ΔSI = delta shock index