Table 3.

Log binomial models for obesity risk at age two in the PREVAIL Cohort

	Variable	Level	RR	95%CI	R2	AIC	AUROC
Univariable Models	Deprivation Index score	Log10(score)	4.75	0.69 – 33.34	0.025	150.68	0.597
	Deprivation Index category	Low SEE1	3.31	0.99 – 14.57	0.062	150.90	0.615
		Low Mid1	3.40	1.06 – 14.79
		High Mid1	3.48	1.12 – 14.97
	Not High SEE	Yes1	3.40	1.26 – 13.86	0.062	146.92	0.611
	Low income	Yes2	1.68	0.83 – 3.61	0.021	151.09	0.575
	Low access a b	Yes3	0.68	0.30 – 2.11	0.006	152.59	0.526
	LILA	Yes4	1.52	0.75 – 3.08	0.014	151.78	0.561
	Race	Black5	1.34	0.63 – 2.85	0.036	151.50	0.521
		Other5	3.36	0.93 – 8.07
	Maternal Educ	≤High School6	1.09	0.52 – 2.19	0.001	153.11	0.513
	Maternal Age	Years	1.03	0.96 – 1.11	0.009	152.32	0.563
	Income Level	< $25k/year7	0.89	0.39 – 2.22	0.011	154.07	0.552
		$25–50k/year7	1.41	0.53 – 3.74
	Insurance	Public8	1.26	0.63 – 2.60	0.004	152.73	0.535
	Marital status	Unmarried9	1.45	0.72 – 2.93	0.011	152.08	0.554
	Lives with Partner	No10	0.91	0.37 – 1.95	0.001	144.96	0.511
	Maternal obesity	Yes11	1.31	0.65 – 2.6	0.006	152.59	0.539
Multivariable	Deprivation Index score + race + maternal education + maternal obesity	Log(10) score	8.29	0.65 – 108.48	0.068	154.3	0.644
		Black5	1.14	0.38 – 3.18
		Other5	3.03	0.82 – 7.67
		≤High School l6	0.62	0.23 – 1.70
		Mat. obesity11	1.24	0.59 – 2.60
	Deprivation Index category + race + maternal education + maternal obesity a	Low SEE1	3.88	0.90 – 16.73	0.099	155.1	0.674
		Low Mid1	3.29	0.89 – 12.13
		High Mid1	3.63	1.04 – 12.68
		Black5	1.19	0.44 – 3.17
		Other5	2.93	1.08 – 7.93
		≤High School6	0.65	0.26 – 1.64
		Mat. obesity11	1.19	0.58 – 2.45
	Not High SEE + race + maternal education + maternal obesity b	Yes1	3.52	1.06 – 11.71	0.098	151.1	0.674
		Black5	1.17	0.44 – 3.09
		Other5	2.81	1.06 – 7.49
		≤High School6	0.69	0.29 – 1.64
		Mat. obesity11	1.18	0.58 – 2.41
	LILA	Yes4	1.36	0.63 – 2.97	0.048	156.3	0.613
		Black5	1.24	0.40 – 3.50
		Other5	3.10	0.83 – 8.04
		≤High School l6	0.84	0.34 – 2.13
		Mat. obesity11	1.20	0.57 – 2.52

Log binomial models of risk of obesity at age two for children enrolled in the PREVAIL cohort (n = 171) by family-level socio-demographic and neighborhood socio-economic environment (SEE). Residential addresses were geocoded and assigned validated measures of census tract-level SEE, including the Deprivation Index and USDA low income and low access variables. Categorical Deprivation Index was based on quartile of score and a low income/low access (LILA) designation was defined as census tracts that met both USDA low income and low access criteria. An area under the receiver operator characteristic curve (AUROC) ≥0.70 was considered adequate predictive accuracy, with higher variance explained (R2) and lower Akaike information criterion (AIC) indicating better model fit. Superscript letters indicate significant differences in AUROC per DeLong’s test for correlated AUROC for the model comparisons.

Reference values are

¹High SEE,

²not Low Income,

³not Low Access,

⁴not LILA,

⁵white race,

⁶> high school education level,

⁷income > $50,000/year,

⁸private insurance,

⁹married,

¹⁰cohabitating,

¹¹no maternal obesity.