Injury characteristics and outcome of road traffic accident among victims at Adult Emergency Department of Tikur Anbessa specialized hospital, Addis Ababa, Ethiopia: a prospective hospital based study

Table 7 Hierarchical multiple regression model showing fatalities from road traffic accidents

Variables entered into the model	R	R²	R² change	B	SE	ß	t	P
Step 1	0.62	0.38**
Age				0.14	0.05	0.16	2.83	0.005*
Glasgow coma scale				−0.17	0.02	−0.44	−7.53	0.000**
SBP at admission				−0.25	0.04	−0.34	−6.57	0.000**
Severity of trauma				0.01	0.03	0.01	0.22	0.829
Step 2	0.62	0.386**	0.006
Vehicle type				0.001	0.17	0.002	0.04	0.968
Crash type				0.03	0.02	0.09	1.47	0.144
Road user type				−0.02	0.03	−0.06	−0.89	0.377

Statistical significance: *p < 0.05; **p < 0.001
R² amount of variance explained by independent variables,R²change Additional variance in dependent variable, B Unstandardized coefficient, ß Standardized coefficient, SE Standard Error, t estimated coefficient (B) divided by its own SE

ISSN: 1471-227X