Table 2: Longitudinal analysis of PHQ-9 scores over time.

Coefficient SEP value

Independent variables
 Intercept10.491.60<.0001
 Age.02.02.4908
Race/ethnicity .8429
 Non-Hispanic white (ref) 40
 African American 3 .81
 Hispanic 2 .56
 Other 1 .91
Marital status.0219
 Married (ref)0
 Widowed 4 1.17
 Separated/divorced 3 .66
 Single 2 .70
 Unknown 1 1.08
Non-English speaking 1.16.0373
Bipolar disorder .55<.0001
Psychotic disorder .93.3635
Anxiety .76.8465
Diabetes .50.2205
Cardiovascular disease .62.9088
Pulmonary disease .50.2963
Slope terms
 Change per month in DCM group .04<.0001
Difference in slope for non-English speaking .31.0380
Difference in slope for patients with anxiety.23.11.0418