Table 3.

Predictors of a New Depression Diagnosis Among Patients With Prevalent Diabetes Relative to Matched Nondiabetic Patients

Parameter	Age-Sex Coefficient^a	PValue	Age-Sex-Visit Coefficient^a	PValue
PC=primary care.
^a A positive coefficient indicates an increased likelihood of a depression diagnosis after the index date; a negative coefficient indicates a decreased likelihood.
^b Age was centered around the mean of 61 years.
^c Number of primary care visits was centered around the median of 6.
Diabetes
Incident	0.577	<.001	0.002	.98
Prevalent	0.543	<.001	−0.083	.08
Age
Linear^b	0.011	<.001	0.004	.01
Quadratic	0.0002	.002	0.0002	.009
Sex (male)	−0.421	<.001	−0.474	<.001
Number of PC visits
Linear^c	−0.087	<.001	−0.088	<.001
Quadratic	0.008	<.001	0.006	<.001
Comorbidity score ≥1	0.522	<.001	0.544	<.001
Enrollment ≤19 months	0.012	.91	−0.365	<.001
Interactions
Incident diabetes * number of PC visits	−0.041	.04	−0.034	.09
Prevalent diabetes * number of PC visits	−0.056	<.001	−0.040	<.001
Incident diabetes * enrollment ≤19 months	−0.054	.80	–	–
Prevalent diabetes * enrollment ≤19 months	−0.372	.004	–	–
Number of PC visits * comorbidity score ≥1	−0.056	<.001	−0.066	<.001
Number of PC visits * enrollment ≤19 months	0.110	<.001	0.105	<.001
Statistics
Intercept	−3.056	–	−2.315	–
Likelihood ratio χ²	673.19	<.001	657.94	<.001
C statistic	0.655	.25	0.645	.18
Hosmer-Lemeshow χ²	10.20	–	11.39	–