Table 2.
Patient characteristics a
| 2011 | 2013 | Missing | P -value | ||||
|---|---|---|---|---|---|---|---|
| Patients with ISS >15 and ≥3 U of PRBC | 130 | 96 | |||||
| Age, yr | Mean (SD) | 48.8 (±19.6) | 51.1 (±21.6) | – | 0.436 | ||
| Sex | n (%) | M | 95 (73.1%) | 65 (67.7%) | – | 0.459 | |
| F | 35 (26.9%) | 31 (32.3%) | |||||
| Direct admission/referral | n (%) | Direct admission | 89 (68.5%) | 68 (70.8%) | – | 0.770 | |
| Referral | 41 (31.5%) | 28 (29.2%) | |||||
| Clinical data | |||||||
| GCS score | Median (IQR) | 14 (9) | 13 (8.5) | 1 | 0.608 | ||
| SBP, mmHg | Mean (SD) | 108.5 (±32.0) | 104.9 (±29.9) | 1 | 0.482 | ||
| Anatomical injury score | |||||||
| ISS | Median (IQR) | 32.5 (16) | 33 (18) | – | 0.702 | ||
| Mean (SD) | 32.9 (±11.4) | 33.6 (±12.1) | |||||
| AIS head | Median (IQR) | 2 (4) | 3 (4.5) | – | 0.343 | ||
| Mean (SD) | 2.2 (±2.1) | 2.4 (±2.0) | |||||
| AIS face | Median (IQR) | 0 (0) | 0 (0) | – | 0.839 | ||
| Mean (SD) | 0.51 (±1.0) | 0.44 (±0.9) | |||||
| AIS chest | Median (IQR) | 3 (4) | 3 (3.5) | – | 0.777 | ||
| Mean (SD) | 2.6 (±1.8) | 2.5 (±1.8) | |||||
| AIS abdomen | Median (IQR) | 2 (3) | 0 (3) | – | 0.036 | ||
| Mean (SD) | 1.83 (±1.7) | 1.36 (±1.7) | |||||
| AIS pelvis and limbs | Median (IQR) | 3 (3) | 3 (1) | – | 0.138 | ||
| Mean (SD) | 2.1 (±1.6) | 2.5 (±1.6) | |||||
| AIS extremities | Median (IQR) | 0 (1) | 0 (0) | – | 0.05 | ||
| Mean (SD) | 0.36 (±0.6) | 0.19 (±0.6) | |||||
| Laboratory data | |||||||
| pH | Mean (SD) | 7.32 (±0.1) | 7.29 (±0.1) | 56 | 0.398 | ||
| Lactate mmol/L | Mean (SD) | 3.15 (±1.7) | 3.18 (±2.7) | 52 | 0.094 | ||
| BE | Mean (SD) | −4.47 (±3.5) | −4.96 (±5.0) | 63 | 0.997 | ||
| Hb, g/dl | Mean (SD) | 10.8 (±2.4) | 11.2 (±2.1) | 13 | 0.240 | ||
| PTL, μl | Mean (SD) | 196.6 (±70.9) | 205.3 (±77.4) | 53 | 0.439 | ||
| INR | Mean (SD) | 1.40 (±0.5) | 1.38 (±0.6) | 24 | 0.408 | ||
| FIB (von Clauss method), mg/100 ml | Mean (SD) | 184 (±92.8) | 196.0 (±85.4) | 69 | 0.276 | ||
aAIS, Anatomical injury score; BE, Base excess; FIB EXTREMITIES, Fibrinogen; GCS, Glasgow Coma Scale; Hb, Hemoglobin; INR, International normalized ratio; IQR, Interquartile range; ISS, Injury Severity Score; PRBC, Packed red blood cells; PTL, Platelets; SBP, Systolic blood pressure; SD, Standard deviation.