Table 1.
Baseline demographic and clinical features
| Characteristic | N | Overall | Low comorbidity | High comorbidity |
|---|---|---|---|---|
| Age (years) | 538 | 66 (55–75) | 65 (54–73) | 69 (58–78) |
| Female (%) | 538 | 405 (75%) | 260 (81%) | 145 (67%) |
| Race (% black) | 537 | 42 (8%) | 21 (7%) | 21 (10%) |
| Active tobacco use (%) | 531 | 96 (18%) | 74 (23%) | 22 (10%) |
| Active alcohol abuse (%) | 531 | 29 (5%) | 23 (7%) | 6 (3%) |
| Pre-existing psychiatric illness (%) | 535 | 186 (35%) | 114 (36%) | 72 (33%) |
| Hypertension (%) | 535 | 302 (56%) | 182 (57%) | 120 (56%) |
| Hyperlipidemia (%) | 535 | 181 (34%) | 107 (34%) | 74 (34%) |
| Diabetes mellitus (%) | 536 | 97 (18%) | 37 (12%) | 60 (28%) |
| History of malignancy (%) | 535 | 138 (26%) | 29 (9%) | 108 (50%) |
| Charlson Comorbidity index | 534 | 2 (1–4) | 1 (0–2) | 4 (3–6) |
| Physical stressor as trigger of Takotsubo Cardiomyopathy (%) | 538 | 364 (68%) | 189 (59%) | 175 (81%) |
| Troponin I, peak (ng/mL) | 485 | 2.4 (0.7–6.2) | 2.7 (0.8–6.2) | 2.2 (0.6–6.2) |
| B-type natriuretic peptide, peak (pg/mL) | 245 | 703 (192–1610) | 554 (131–1130) | 810 (257–2477) |
| Left ventricle ejection fraction (%) | 538 | 33 (25–43) | 37 (27–45) | 33 (25–43) |
| Atypical wall motion abnormality (%) | 538 | 71 (13%) | 45 (14%) | 26 (12%) |
Data are presented as median (IQR) for continuous variables and number (percentage) of subjects for categorical variables. N represents the number of subjects with non-missing values