. Author manuscript; available in PMC: 2016 Apr 19.

Published in final edited form as: J Trauma Acute Care Surg. 2013 Oct;75(4):669–675. doi: 10.1097/TA.0b013e3182a12ba6

TABLE 3.

Predictor Coefficient and Centering/Scaling Values

	Coefficient		Variable
Predictor	β value	SD	Center	Scale
Intercept	−4.972	0.111	0	1
BD	−1.551	0.101	−4.702	3.280
GSW	0.142	0.224	0	1
Ln(HR / SBP)	0.591	0.060	−0.377	0.340
Ln(HR / SBP) × BD	0.180	0.028	1.451	2.387
BD × GSW	−0.074	0.0001	−0.905	2.693
BD × SW	0.037	0.033	−0.282	1.496
Ln(HR / SBP) × blunt	0.098	0.045	−0.312	0.332
BD²	−0.367	0.058	32.843	62.176

GSW, SW and blunt are coded as 0 (negative) or 1 (positive) for the respective MOI. Center and scale values are based on mean and SDs from the entire data set of 10,900 visits.