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Table 3—

Multivariable associations with diabetes metabolic control

Independent variableDependent variable: most recent HbA1c
Dependent variable: change in HbA1c*
Parameter estimateP valuePartial R2Parameter estimateP valuePartial R2
Race (white = 0) 0.29 0.04 0.5% 0.28 0.04 0.4% 
Sex (male = 0) −0.21 0.13 NA −0.12 0.36 NA 
Age (years) −0.014 0.02 0.7% −0.005 0.38 NA 
Income/copay Multiple 0.12 NA Multiple 0.57 NA 
Adherence (0–100%) −0.016 <0.0001 2.7% 0.013 <0.0001 1.5% 
No. oral agents 0.89 <0.0001 7.5% 0.63 <0.0001 3.6% 
Insulin use (0 or 1) 0.75 <0.0001 2.6% 0.50 0.001 1.1% 
No. HbA1c levels −0.09 0.06 NA −0.05 0.33 NA 
No. encounters −0.006 0.61 NA 0.004 0.68 NA 
Continuity index −0.10 0.74 NA 0.28 0.35 NA 
Independent variableDependent variable: most recent HbA1c
Dependent variable: change in HbA1c*
Parameter estimateP valuePartial R2Parameter estimateP valuePartial R2
Race (white = 0) 0.29 0.04 0.5% 0.28 0.04 0.4% 
Sex (male = 0) −0.21 0.13 NA −0.12 0.36 NA 
Age (years) −0.014 0.02 0.7% −0.005 0.38 NA 
Income/copay Multiple 0.12 NA Multiple 0.57 NA 
Adherence (0–100%) −0.016 <0.0001 2.7% 0.013 <0.0001 1.5% 
No. oral agents 0.89 <0.0001 7.5% 0.63 <0.0001 3.6% 
Insulin use (0 or 1) 0.75 <0.0001 2.6% 0.50 0.001 1.1% 
No. HbA1c levels −0.09 0.06 NA −0.05 0.33 NA 
No. encounters −0.006 0.61 NA 0.004 0.68 NA 
Continuity index −0.10 0.74 NA 0.28 0.35 NA 
*

The initial HbA1c level was controlled for in this model.

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