Predicting outcomes after blunt chest wall trauma: development and external validation of a new prognostic model

Table 4 Risk factor scores as transformed from the regression coefficients

	Regression coefficient	Risk score
Age	0.0162	1^a
Number of rib fractures	0.418	3^b
Chronic lung disease	0.789	5
Pre-injury anticoagulant use	0.637	4
Oxygen saturation levels	−0.0651	2^c

^aPer additional 10-year increase starting at 10 years of age; ^bper additional rib fracture; ^cper 5% decrease in oxygen saturations starting at 94%.

ISSN: 1364-8535