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. Author manuscript; available in PMC: 2020 Oct 1.

Published in final edited form as: Environ Int. 2019 Jul 6;131:104903. doi: 10.1016/j.envint.2019.104903

Table 1.

Demographic characteristics of the study population (N = 481).

		N	Weighted %
Age	< 25 years	54	12
	25– < 30 years	95	20
	30– < 35 years	189	39
	35– < 40 years	116	24
	≥ 40 years	27	5
Race/ethnicity	White	282	59
	Black	77	16
	Other	122	25
Pre-pregnancy BMI (nmiss = 11)	< 25 kg/m²	263	57
	25– < 30 kg/m²	119	25
	≥ 30 kg/m²	88	18
Health insurance (nmiss = 12)	Private	378	80
	Public	91	20
Education (nmiss = 11)	High school	68	14
	Technical school	77	16
	Junior/some college	138	29
	College graduate +	187	41
Tobacco use	No	453	95
	Yes	28	5
Alcohol use (nmiss =10)	No	448	95
	Yes	19	5

Abbreviations: BMI, body mass index.