Table 3. DERRI-CVD™ predictors of all-cause 30d readmission in training sample.

Predictor	Odds Ratio (95% CI)	P value
Home zip code <5 miles from hospital	1.52 (1.25-1.85)	<0.001
Employment status (vs. Employed)
Unemployed	1.37 (0.99-1.89)	0. 056
Retired	1.45 (1.08-1.94)	0.012
Disabled	1.61 (1.16-2.24)	0.004
Education level (vs. College graduate)
Less than high school	1.15 (0.85-1.56)	0 .36
Any high school	1.43 (1.14-1.81)	0.002
Some college	1.38 (1.01-1.88)	0.044
Pre -admission metformin	0.79 (0.64-0.97)	0.022
Pre-admission sulfonylurea	1.28 (1.04-1.59)	0.022
Macrovascular complicationsa, # (vs. 0)
2	1.27 (1.07-1.51)	0. 008
3	1.42 (1.11-1.81)	0.005
4	1.22 (0.79-1.90)	0.37
Log (admission serum creatinine)	1.23 (1.07-1.41)	0.004
Serum albumin (vs. >4 g/dL)
Low, <4 g/dL	1.23 (1.03-1.46)	0. 021
Schizophrenia or mood disorder, current or prior	1.31 (1.07-1.60)	0.008
Discharged within 90 days before admission	2.00 (1.69-2.36)	<0.001

^aCoronary artery disease, heart failure, stroke, peripheral vascular disease;

DERRI-CVD, diabetes early readmission risk index-cardiovascular disease