Table 2.

Risk factors for progressive hemorrhage.

	Univariate logistic regression b		Multivariable logistic regression
	Odds ratio	p value	Odds ratio	p value
Scalp hematoma	16.362 (2.079, 128.757)	0.008	10.382 (3.595, 29.978)	<0.0001*
GCS score, mean ± SD	1.0 (0.975, 1.025)	0.974	/	/
Onset-to-CT timea, mean ± SD (h)	0.759 (0.611, 0.943)	0.013	0.728 (0.578, 0.915)	0.007*
Fibrinogen, mean ± SD (g/L)	0.607 (0.407, 0.905)	0.014	0.638 (0.453, 0.898)	0.010*

^aOnset-to-CT time, Interval from trauma to first CT.

^bUnivariate LRs of the clinical factors on the labels were implemented one by one to check whether there were insignificant variables.

*The predictors included for the further analysis (p < 0.05).