Table 3 Multivariable model for predictors of A1c levels over time

Predictors	Estimate	SE	P-value^a
Months (linear)	−0.472	0.061	<0.001
Months (square)	0.075	0.013	<0.001
Months (cubic)	−0.004	0.001	<0.001
Months (quadratic)	0.0001	0.00002	<0.001
Food insecure at enrollment	0.428	0.178	0.017
Food insecure × months (linear)	−0.023	0.011	0.036
Age at enrollment	−0.006	0.011	0.571
Food insecure × age	−0.053	0.014	<0.001
BMI at enrollment	−0.064	0.016	<0.001
Years since diagnosis	0.038	0.012	0.002
Years since diagnosis × BMI	0.004	0.001	0.006
Race, ethnicity and language
White non-Hispanic	Reference
African-American non-Hispanic	0.426	0.298	0.153
Hispanic-Spanish	0.563	0.286	0.049
Hispanic-English	1.010	0.368	0.006
Other	0.693	0.426	0.104
Time-varying insulin	0.705	0.127	<0.001

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