Table 5.

Slope Coefficients: Estimated Marginal Mean Differences in Average Change or Slope (Trajectory) of HbA1c Level for Every Unit Change in the Variable^*

Category for Slope differences for mean HbA1c	Fixed Effects	β Coefficient	SE (β)	P Value	Linear Contrast P Values
Node	Grand mean at baseline^{^†}	0.033	0.027	0.241	>.500
	Mean HbA1c level difference, node 2 vs node 1	−0.006	0.021	0.795
	Mean HbA1c level difference, node 3 vs node 1	0.015	0.040	0.723
	Mean HbA1c level difference, node 4 vs node 1	0.006	0.017	0.711
Age (at baseline)	Each additional year of age	−0.003	0.000	<0.001	NA
Charlson index score	Each additional Charlson index score point	−0.002	0.006	0.796	NA
Sex	Female vs male	0.016	0.009	0.075	NA
Race/ethnicity	Hispanic vs non-Hispanic white	0.052	0.028	0.087	.22
	Non-Hispanic black vs non-Hispanic white	−0.005	0.030	0.858
	Non-Hispanic Asian or Pacific Islander vs non-Hispanic white	−0.014	0.023	0.559
	Non-Hispanic other vs non-Hispanic white	−0.052	0.047	0.284
Insurance status	Continually uninsured vs continually insured	0.054	0.021	0.024	.014
Insurance status	Insurance gaps vs continually insured	−0.002	0.010	0.833	.014
Primary language	Spanish vs English	−0.060	0.034	0.101	.052
	Cantonese or Mandarin vs English	0.039	0.018	0.051
	Other language vs English	0.019	0.027	0.479
Health care use^{^‡}	3 or 4 Visits vs 1 or 2 visits	−0.020	0.020	0.333	>.500
Health care use^{^‡}	≥5 Visits vs 1 or 2 visits	−0.024	0.021	0.280	>.500

↵* This multilevel model predicted mean HbA1c level as a function of diabetes status, primary language, and insurance status, adjusting for age, Charlson index score, sex, race/ethnicity, and node.
↵† Assuming all other covariates equal zero.
↵‡ Average number of annual primary care visits.
NA, not available; SE, standard error.