Association of county perinatal resources and gestational weight gain in West Virginia, United States

Table 3 Significant individual level and county level characteristics associated with gestational weight gain in West Virginia United States, 2010–2011 births. n = 24,502

Effect	Comparison Category	e	σ	95% Confidence Limits		t^a	p-value
Effect	Comparison Category	e	σ	Lower	Upper	t^a	p-value
Intercept		42.51	0.05	35.94	49.09	12.96	<.0001
County perinatal resources (ref = above average)	Average	−17.20	0.05	−22.94	−11.47	−6.48	<.0001
County perinatal resources (ref = above average)	Below average	−5.29	0.05	−13.94	3.35	−1.32	0.2086
Mother’s Age (years)		−0.14	0.05	−0.19	−0.09	−5.48	<.0001
% of county population in poverty		−1.01	0.05	−1.34	−0.67	−5.94	<.0001
Gestational Hypertension? (ref = No)	Yes	1.94	0.05	1.33	2.55	6.34	<.0001
Newborn’s Sex (ref = Female)	Male	0.85	0.05	0.50	1.20	4.91	<.0001
Insurance/Payer (ref = Non Medicaid)	Medicaid	1.75	0.05	−0.09	3.59	1.91	0.0614
Smoked during pregnancy? (ref = No)	Yes	−2.70	0.05	−3.62	−1.78	−5.90	<.0001
Gestational Diabetes? (Ref = No)	Yes	−4.32	0.05	−5.17	− 3.48	− 10.32	<.0001
Trimester prenatal care began (ref = 1st Trimester)	2nd Trimester	−1.62	0.05	−2.12	−1.11	−6.32	<.0001
	3rd Trimester	−2.53	0.05	−3.58	−1.49	−4.81	<.0001
	No care	−10.36	0.05	−12.97	−7.74	−7.82	<.0001
Race/Ethnicity	White non-Hispanic	1.12	0.05	0.36	1.88	2.97	0.0046
Smoked during pregnancy? and Insurance/payer interaction	Yes vs Medicaid	1.21	0.05	0.18	2.24	2.36	0.0221
% of county population in poverty and County perinatal resources interaction	% in poverty*Average	1.24	0.05	0.95	1.53	8.40	<.0001
	% in poverty* Below average	0.76	0.05	0.36	1.17	3.73	0.0002
Mother’s Age and Insurance/Payer interaction	Mother’s Age * Medicaid	−0.12	0.05	−0.19	−0.06	−3.72	0.0002

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