Table 3. Univariate and multivariate logistic regression models for the association between CCI score and incidence of the in-hospital primary and secondary outcomes (CCI <3 used as reference).
| The impact of CCI on in-hospital outcomes | OR (95%CI) | P value* |
|---|---|---|
| The impact of CCI on in-hospital mortality | ||
| Model 1: unadjusted | 0.83 (0.36 to 1.94) | 0.67 |
| Model 2: adjusted for age, sex, smoking, drinking | 0.81 (0.34 to 1.90) | 0.62 |
| Model 3: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification | 0.72 (0.29 to 1.81) | 0.48 |
| Model 4: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification, GRACE score | 0.8 (0.33 to 1.96) | 0.63 |
| The impact of CCI on in-hospital MACEs | ||
| Model 1: unadjusted | 3.06 (2.22 to 4.22) | <0.001 |
| Model 2: adjusted for age, sex, smoking, drinking | 3.1 (2.25 to 4.28) | <0.001 |
| Model 3: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification | 3.84 (2.69 to 5.49) | <0.001 |
| Model 4: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification, GRACE score | 3.89 (2.71 to 5.57) | <0.001 |
| The impact of CCI on length of stay | ||
| Model 1: unadjusted | 1.36 (1.07 to 2.03) | <0.001 |
| Model 2: adjusted for age, sex, smoking, drinking | 1.41 (0.75 to 2.07) | <0.001 |
| Model 3: adjusted for age, sex, smoking, drinking, PCI, Coronary angiography, Killip classification | 1.39 (0.73 to 2.04) | <0.001 |
| Model 4: adjusted for age, sex, smoking, drinking, PCI, Coronary angiography, Killip classification, GRACE score | 1.34 (0.68 to 1.99) | <0.001 |
| The impact of CCI on readmission | ||
| Model 1: unadjusted | 1.29 (1.03 to 1.63) | 0.028 |
| Model 2: adjusted for age, sex, smoking, drinking | 1.28 (1.02 to 1.62) | 0.035 |
| Model 3: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification | 1.29 (1.02 to 1.63) | 0.035 |
| Model 4: adjusted for age, sex, smoking, drinking, PCI, coronary angiography, Killip classification, GRACE score | 1.28 (1.01 to 1.62) | 0.041 |
*
Statistically significant results (p<0.05) are displayed in bold.
CCI, Charlson Comorbidity Index; MACEs, major adverse cardiovascular events.