Table 4. Linear regression results estimating IVL associations with OME and pain measures: Unadjusted estimates (univariate) and multivariable estimates adjusted for injury severity score, hospital length of stay, and age (interaction).

	OME per day, mg		OME last 24 hours of admission, mg		NRS pain score, admission hours 24–48
	β [95% CI]	p	β [95% CI]	p	β [95% CI]	p
IVL, unadjusted	-0.68 [-17.4, 16.0]	0.94	-12.16 [-30.3, 6.0]	0.19	-0.08 [-0.43, 0.26]	0.63
IVL, adjusted	7.94 [-13.7, 29.6]	0.47	-7.55 [-31.4, 16.3]	0.53	-0.11 [-0.56, 0.35]	0.64

Abbreviations: IVL = intravenous lidocaine, OME = oral morphine equivalents, CI = confidence interval, NRS = numeric rating scale.