Table 2.

Binary Logistic Regression Predicting Opioid Analgesic Administration (Step 1)

Variable	B	SE	p	OR	95% CI for OR
					Lower	Upper
NACA score	0.562	0.008	< 0.001	1.754	1.726	1.783
Trauma mechanism	0.909	0.014	< 0.001	2.481	2.414	2.550
Patient age	−0.003	0.000	< 0.001	0.997	0.997	0.998
Sex of EMS provider (female vs. male)	0.089	0.016	< 0.001	1.093	1.059	1.128
Sex of patient (female vs. male)	−0.100	0.013	< 0.001	0.905	0.881	0.929
Constant	−2.117	0.038	< 0.001	0.120	—	—

Note. OR = odds ratio; CI = confidence interval; SE = standard error; NACA = National Advisory Committee for Aeronautics severity score. Variables entered in Step 1: NACA score, trauma mechanism, patient age, sex of EMS provider, sex of patient. Reference category for sex variables: female. Cut value = 0.500