Table 3.
Multivariable Poisson regression of duration of hospitalization (measured in days) on Charlson Comorbidity Index and covariates
| IRR | 95% CI | P value | ||
|---|---|---|---|---|
| Lower | Upper | |||
| Age (years) | 0.99 | 0.98 | 0.99 | < 0.001 |
| Charlson comorbidity index | 1.17 | 1.16 | 1.18 | < 0.001 |
| Physical stressor as trigger of Takotsubo Cardiomyopathy | 2.51 | 2.32 | 2.71 | < 0.001 |
| Troponin I, peak (ng/mL) | 0.99 | 0.98 | 0.99 | < 0.001 |
| Left ventricle ejection fraction (%) | 0.99 | 0.98 | 0.99 | < 0.001 |
| Atypical wall motion abnormality | 1.17 | 1.09 | 1.26 | < 0.001 |
| IRR | 95% CI | P value | ||
| Lower | Upper | |||
| Age (years) | 0.99 | 0.98 | 0.99 | < 0.001 |
| High comorbidity | 2.02 | 1.92 | 2.13 | < 0.001 |
| Physical stressor as trigger of Takotsubo Cardiomyopathy | 2.62 | 2.43 | 2.84 | < 0.001 |
| Troponin I, peak (ng/mL) | 0.99 | 0.98 | 0.99 | < 0.001 |
| Left ventricle ejection fraction (%) | 0.99 | 0.98 | 0.99 | < 0.001 |
| Atypical wall motion abnormality | 1.08 | 1.01 | 1.16 | 0.034 |
CI: confidence interval, IRR: incidence rate ratio