Table 2—

Hierarchical stepwise linear regression: predictors of depression in patients with diabetic peripheral neuropathy

Model IModel IIModel IIIModel IVModel VModel VI
R20.060.110.390.420.440.46
Demographic/disease variables
    Sex0.040.080.030.030.020.03
    Education−0.12*−0.11*−0.07−0.05−0.04−0.05
    Type 2 diabetes0.13*0.12*0.030.030.040.04
    Diabetes duration0.03−0.010.01−0.00−0.010.00
    Has partner0.010.010.010.030.030.01
    Age−0.07−0.070.010.010.020.03
    U.S. study site−0.08−0.13−0.16−0.15−0.16−0.16
    Number of diabetes complications0.11*0.09*0.030.040.040.02
Number of comorbidities0.12*0.12*0.020.020.020.02
Objective diabetic neuropathy severity
    NDS0.13−0.04−0.05−0.04−0.05
    VPT0.150.040.050.050.05
Diabetic neuropathy symptoms:
    NeuroQoL Reduced feeling in feet0.180.160.11*0.08
    NeuroQoL Pain0.270.210.190.16
    NeuroQoL Unsteadiness0.300.280.230.18
Perceptions of diabetic neuropathy and its treatment
    IPQ-R Treatment control−0.12−0.13−0.14
    IPQ-R Episodic-unpredictable timeline0.160.140.13
NeuroQoL Restrictions in ADLs0.180.08
NeuroQoL Changes in social self-perception0.23
  • Data are standardized regression coefficients (β).

  • *

    * P < 0.05;

  • P < 0.01;

  • P < 0.001.