Variable | 1–3 vs No DKA readmissions | ≥4 vs No DKA readmissions | ||||
OR | (95% CI) | P value | OR | (95% CI) | P value | |
Age | 0.96 | 0.96 to 0.96 | <0.001 | 0.93 | 0.92 to 0.93 | <0.001 |
Sex | ||||||
Female | 1.19 | 1.16 to 1.23 | <0.001 | 1.40 | 1.32 to 1.49 | <0.001 |
Male | 1.00 | (ref) | – | 1.00 | (ref) | – |
In-state residence | ||||||
Non-resident | 1.00 | (ref) | – | 1.00 | (ref) | – |
Resident | 2.02 | 1.82 to 2.23 | <0.001 | 3.38 | 2.6 to 4.31 | <0.001 |
Median income quartile | ||||||
Quartile 1 | 1.19 | 1.14 to 1.25 | <0.001 | 1.46 | 1.30 to 1.64 | <0.001 |
Quartile 2 | 1.16 | 1.11 to 1.22 | <0.001 | 1.34 | 1.19 to 1.51 | <0.001 |
Quartile 3 | 1.09 | 1.04 to 1.15 | <0.001 | 1.28 | 1.13 to 1.44 | <0.001 |
Quartile 4 | 1.00 | (ref) | – | 1.00 | (ref) | <0.001 |
Payer | ||||||
Medicare | 2.08 | 1.97 to 2.19 | <0.001 | 3.33 | 2.94 to 3.79 | <0.001 |
Medicaid | 1.89 | 1.82 to 1.97 | <0.001 | 3.33 | 3.02 to 3.67 | <0.001 |
Private | 1.00 | (ref) | – | 1.00 | (ref) | – |
Self-pay | 1.57 | 1.50 to 1.65 | <0.001 | 2.16 | 1.94 to 2.41 | <0.001 |
No charge | 1.59 | 1.41 to 1.80 | <0.001 | 2.50 | 1.92 to 3.27 | <0.001 |
Other | 1.32 | 1.24 to 1.41 | <0.001 | 1.85 | 1.58 to 2.15 | <0.001 |
No of chronic illnesses | 1.04 | 1.03 to 1.05 | <0.001 | 1.09 | 1.06 to 1.11 | <0.001 |
No of diagnoses | 1.03 | 1.03 to 1.05 | <0.001 | 1.03 | 1.02 to 1.05 | <0.001 |
LOS | 0.99 | 0.98 to 0.99 | <0.001 | 1.00 | 0.99 to 1.01 | 0.673 |
Disposition | ||||||
Routine | 1.00 | (ref) | – | 1.00 | (ref) | – |
Hospital transfer | 0.95 | 0.76 to 1.20 | 0.691 | 0.26 | 0.12 to 0.57 | 0.001 |
Facility transfer | 0.89 | 0.80 to 0.99 | 0.028 | 0.59 | 0.44 to 0.80 | 0.001 |
Home health | 0.87 | 0.81 to 0.94 | <0.001 | 1.01 | 0.86 to 1.19 | 0.881 |
AMA | 1.41 | 1.33 to 1.49 | <0.001 | 1.70 | 1.53 to 1.91 | <0.001 |
Unknown | 1.22 | 0.48 to 3.10 | 0.68 | – | – | <0.001 |
Hospital size | ||||||
Small | 1.05 | 1.00 to 1.09 | 0.06 | 1.05 | 0.95 to 1.15 | 0.372 |
Medium | 1.02 | 0.99 to 1.06 | 0.17 | 1.03 | 0.95 to 1.10 | 0.493 |
Large | 1.00 | (ref) | – | 1.00 | (ref) | – |
Hospital rural urban status | ||||||
Rural | – | – | – | 1.0 | (ref) | – |
Urban | – | – | – | 0.02 | 0.02 to 0.03 | 0.053 |
AMA, against medical advice; DKA, diabetic ketoacidosis; LOS, length of stay; ref, reference.