B. Logistic Regression Analysis.

	Crude		Adjusted
Group	OR	95% CI	OR	95% CI	P Value
Weight	1.02	1.01-1.04	1.03	1.01-1.05	<0.001***
Gender	0.87	0.59-1.27	1.48	0.89-2.44	.129
Collision	1.33	0.93-1.9	0.94	0.62-1.42	.755
D14	2.05	1.2-3.52	2.14	1.1-4.18	.025*
Sex:D14			0.9	0.28-2.87	.864

OR = odds ratio; CI = confidence interval; D14 = allele of ASPN gene.

The formulated logistic model is as follows:

LDDG = exp(β₀ + β₁W + β₂G + β₄COL + β₅D14 + β₆G × D14),

where W, G, COL, and D14 denote weight, gender, collision, and ASPN D14 allele, respectively. β_j (j = 1-6) are parameters to be estimated.

^*P < 0.05. ***P < 0.001.