Table 2

Predictors of DKA readmission in multivariable logistic regression models

Variable1–3 vs No DKA readmissions≥4 vs No DKA readmissions
OR(95% CI)P valueOR(95% CI)P value
Age0.960.96 to 0.96<0.0010.930.92 to 0.93<0.001
Sex
 Female1.191.16 to 1.23<0.0011.401.32 to 1.49<0.001
 Male1.00(ref)1.00(ref)
In-state residence
 Non-resident1.00(ref)1.00(ref)
 Resident2.021.82 to 2.23<0.0013.382.6 to 4.31<0.001
Median income quartile
 Quartile 11.191.14 to 1.25<0.0011.461.30 to 1.64<0.001
 Quartile 21.161.11 to 1.22<0.0011.341.19 to 1.51<0.001
 Quartile 31.091.04 to 1.15<0.0011.281.13 to 1.44<0.001
 Quartile 41.00(ref)1.00(ref)<0.001
Payer
 Medicare2.081.97 to 2.19<0.0013.332.94 to 3.79<0.001
 Medicaid1.891.82 to 1.97<0.0013.333.02 to 3.67<0.001
 Private1.00(ref)1.00(ref)
 Self-pay1.571.50 to 1.65<0.0012.161.94 to 2.41<0.001
 No charge1.591.41 to 1.80<0.0012.501.92 to 3.27<0.001
 Other1.321.24 to 1.41<0.0011.851.58 to 2.15<0.001
No of chronic illnesses1.041.03 to 1.05<0.0011.091.06 to 1.11<0.001
No of diagnoses1.031.03 to 1.05<0.0011.031.02 to 1.05<0.001
LOS0.990.98 to 0.99<0.0011.000.99 to 1.010.673
Disposition
 Routine1.00(ref)1.00(ref)
 Hospital transfer0.950.76 to 1.200.6910.260.12 to 0.570.001
 Facility transfer0.890.80 to 0.990.0280.590.44 to 0.800.001
 Home health0.870.81 to 0.94<0.0011.010.86 to 1.190.881
 AMA1.411.33 to 1.49<0.0011.701.53 to 1.91<0.001
 Unknown1.220.48 to 3.100.68<0.001
Hospital size
 Small1.051.00 to 1.090.061.050.95 to 1.150.372
 Medium1.020.99 to 1.060.171.030.95 to 1.100.493
 Large1.00(ref)1.00(ref)
Hospital rural urban status
 Rural1.0(ref)
 Urban0.020.02 to 0.030.053
  • AMA, against medical advice; DKA, diabetic ketoacidosis; LOS, length of stay; ref, reference.