Table 5.

Variables Considered as Candidates in Multiple Variable Modeling

Variable	HR (95% CI)	P-value	Global P- value
Age at trauma, per 10 years	1.2 (1.1, 1.3)	<0.001
Male sex	1.4 (0.99, 1.9)	0.057
Body mass index			0.006
Normal	1.0 (ref)
Overweight	1.7 (1.2, 2.5)	0.003
Obese	1.7 (1.1, 2.6)	0.025
Current or past tobacco smoker	1.6 (1.1, 2.2)	0.006
Trauma Mortality Prediction Model (TMPM), per 10 % increase	1.6 (1.4, 1.8)	<0.001
Any blood product transfusion	0.9 (0.6, 1.3)	0.509
Any non-hospital related immobility prior to trauma	1.7 (1.2, 2.6)	0.005
Days from trauma to hospital admission			0.055
0 (day of admission)	1.0 (ref)
1–2	0.6 (0.4, 0.98)	0.043
>2	1.2 (0.7, 1.8)	0.486
Hospitalized within 3 months prior to trauma	1.1 (0.7, 1.7)	0.682
Additional hospitalization after trauma admission	1.5 (1.0, 2.1)	0.035
Congestive heart failure	1.7 (1.1, 2.5)	0.013
Hyperlipidemia	1.4 (0.98, 2.0)	0.067
Chronic lung disease	1.3 (0.8, 1.9)	0.279
Hormone therapy	1.3 (0.6, 2.7)	0.555
Prior superficial vein thrombosis	3.1 (1.8, 5.2)	<0.001
Blunt Injury	0.6 (0.4, 1.00)	0.05
Pelvic fracture	1.6 (0.9, 3.0)	0.116
Spinal fracture	1.5 (0.9,2.5)	0.134
Leg fracture	0.7 (0.5, 0.97)	0.032
Arm fracture	0.6 (0.4, 1.1)	0.129
Soft tissue injury, leg	1.9 (1.2, 2.9)	0.003
Soft tissue injury, arm	1.2 (0.7, 2.0)	0.458
Active cancer	2.5 (1.4, 4.3)	0.002
Number of surgeries after trauma			0.002
0	1.0 (ref)
1	0.7 (0.5, 1.1)	0.114
>1	2.3 (1.3, 4.2)	0.006
Mechanical prophylaxis	1.6 (0.9, 2.8)	0.082
Chemoprophylaxis	0.9 (0.5, 1.5)	0.600