Figure 2. Multivariable Cox regression analysis of patients with TTS.

Multivariable Cox regression revealed that atrial fibrillation was independently associated with worse long‐term mortality rates. Male sex, age>70 years, physical trigger, WBC>10×10³ cells/µL, and LVEF<45% also emerged as independent predictors of worse long‐term mortality rates in TTS. Errors bars represent 95% CI. Black rhombi indicate statistical significance; gray rhombi indicate no statistical significance. Bpm indicates beats per minute; CI, confidence interval; COPD, chronic obstructive pulmonary disease; HR, hazard ratio; LVEF, left ventricular ejection fraction; TTS, Takotsubo syndrome; and WBC, white blood cell.