Table 2.

Contributions of Paternal factors to newborn body weight were identified by Multinomial Logistic regression

Paternal factor		Univariate regression		Multinomial Logistic Regression
		B	P	Low Birth Weight			Normal	High Birth Weight
				β	OR	95% CI	Reference	β	OR	95% CI
Socioeconomic	Age	0.002	0.879
	Family Location	0.069	0.000
	Capital city				1.000
	Medium size city			0.661	1.936	0.718-5.221	1.000	0.299	1.348	0.591-3.077
	Small size city			0.652	1.92	0.697-5.292	1.000	-1.758	0.172	0.023-1.303
	Town			0.8	2.226	0.845-5.860	1.000	-0.656	0.519	0.139-1.932
	Rural			1.506	4.511	2.083-9.766	1.000	-1.15	0.317	0.094-1.064
	Education (year)	0.074	0.000
	≥16				1.000				1.000
	14~15			0.259	1.296	0.535-3.138	1.000	0.193	1.213	0.619-2.379
	10~12			0.368	1.445	0.606-3.442	1.000	-0.127	0.881	0.35-2.160
	7~9			0.861	2.365	1.005-5.567	1.000	0.442	1.556	0.580-4.175
	≤6			1.02	2.772	0.940-8.178	1.000	-0.56	0.571	0.073-4.478
	Drinking	0.031	0.160
	Smoking	0.013	0.452
Pre-pregnancy	Chronic disease	-0.319	0.000
	Scree time (hours per day)	0.057	0.012
	≥5				1.000				1.000
	1~5			0.303	1.354	0.624-2.938	1.000	-0.200	0.819	0.335-1.999
	≤1			0.203	1.225	0.494-3.035	1.000	-0.014	0.986	0.534-1.819