Table 2.
Final electronic multicondition multivariate model of risk of 30 day readmission or deatha
| Risk factor | Adjusted odds ratio (95 % C.I.) | P value |
|---|---|---|
| SpO2 < = 94 | 1.11 (1.02 - 1.21) | 0.012 |
| BUN < = 20 | 0.84 (0.77 - 0.92) | 0.000 |
| Systolic BP < = 100 | 1.12 (1.03 - 1.22) | 0.007 |
| Diastolic BP < = 62 | 1.37 (1.05 - 1.79) | 0.019 |
| Pulse > 99 | 1.29 (1.19 - 1.40) | 0.000 |
| Sodium > 145 | 1.48 (1.16 - 1.88) | 0.001 |
| BNP > 2400 or NT proBNP > 18000 | 1.28 (1.02 - 1.61) | 0.034 |
| Anion Gap > 18 | 1.57 (1.19 - 2.06) | 0.001 |
| Albumin < = 2 | 1.83 (1.34 - 2.50) | 0.000 |
| Albumin 2 – 3 | 1.45 (1.31 - 1.61) | 0.000 |
| CO2 > 30 | 1.34 (1.10 - 1.64) | 0.004 |
| CPK < = 60 | 1.20 (1.07 - 1.35) | 0.002 |
| HCT > 35 | 0.80 (0.74 - 0.87) | 0.000 |
| Lymphocyte < = 1.3 | 1.11 (1.01 - 1.21) | 0.023 |
| MCV > 100 | 1.24 (1.03 - 1.49) | 0.022 |
| Platelets < = 90 | 1.51 (1.24 - 1.84) | 0.000 |
| Platelets > 350 | 1.32 (1.16 - 1.49) | 0.000 |
| PT > 35 | 2.05 (1.42 - 2.96) | 0.000 |
| TSH > 7 | 1.48 (1.11 - 1.98) | 0.008 |
| AST > 40 | 1.28 (1.14 - 1.42) | 0.000 |
| Medicare payor | 1.19 (1.08 - 1.31) | 0.000 |
| Medicaid payor | 1.79 (1.55 - 2.08) | 0.000 |
| Male | 1.14 (1.05 - 1.24) | 0.001 |
| Elective admission status | 0.67 (0.59 - 0.77) | 0.000 |
| Prior ED visits in past year | 1.03 (1.02 - 1.05) | 0.000 |
| Prior hospitalizations in past year | 1.17 (1.13 - 1.21) | 0.000 |
| Age | 1.01 (1.01 - 1.02) | 0.000 |
| Charlson Comorbidity index | 1.09 (1.07 - 1.12) | 0.000 |
Abbreviations. BUN, blood urea nitrogen; BP, blood pressure; BNP, B-natriuretic peptide; CO2, carbon dioxide; CPK, creatinine kinase; TSH, thyroid stimulating hormone; AST, aspartate aminotransferase; HCT, hematocrity; MCV, mean cell volume aDerivation cohort; composite outcome of 30-day readmission or mortality