Table 1

 Characteristics of patients with traumatic bleeding in CRASH-2 and Trauma Audit and Research Network (TARN) by risk of death at baseline. Figures are numbers (percentages) unless stated otherwise

Baseline risk
≤5%6-20%21-50%>50%
CRASH-2
No of patients4840 (36)5395 (41)1848 (14)1190 (9)
Men4111 (85)4457 (83)1533 (83)1002 (84)
Blunt injury2761 (57)3186 (59)1316 (71)980 (82)
Mean (IQR) age (years)27 (22-36)32 (25-44)35 (25-48)35 (25-49)
Mean (IQR) systolic blood pressure (mm Hg)100 (90-120)90 (80-110)80 (70-100)80 (60-90)
Mean (IQR) heart rate (per min)100 (90-112)106 (92-120)110 (97-124)118 (98-130)
Mean (IQR) respiratory rate (per min)20 (18-24)24 (20-28)24 (20-30)24 (16-30)
Mean (IQR) Glasgow coma score (total)15 (15-15)15 (13-15)10 (7-13)4 (3-6)
TARN (Trauma Audit and Research Network)
No of patients6486 (48)4912 (36)1456 (11)743 (6)
Men4954 (76)3239 (66)861 (59)537 (72)
Blunt injury5303 (82)4339 (88)1312 (90)716 (96)
Mean (IQR) age (years)30 (22-41)52 (35-67)56 (31-82)42 (27-67)
Mean (IQR) systolic blood pressure (mm Hg)130 (118-142)126 (105-147)120 (96-156)103 (85-130)
Mean (IQR) heart rate (per min)85 (75-98)90 (76-108)100 (81-120)111 (94-130)
Mean (IQR) respiratory rate (per min)18 (16-22)20 (17-24)21 (18-26)22 (18-27)
Mean (IQR) Glasgow coma score (total)15 (15-15)15 (14-15)10 (7-15)3 (3-6)

IQR=interquartile range.