TABLE 1.
Baseline Demographic and Clinical Features
| N | No psychiatric illness (N = 192) | Pre-existing psychiatric illness (N = 114) | P value | |
|---|---|---|---|---|
| Age (y) | 306 | 69 (57–75) | 60 (51–69) | <0.001* |
| Female (%) | 306 | 149 (78%) | 92 (81%) | 0.522† |
| Race (% white) | 306 | 161 (84%) | 99 (87%) | 0.480† |
| Insurance (% Medicaid) | 304 | 16 (8%) | 12 (11%) | 0.513† |
| Education (% with college degree) | 249 | 38 (25%) | 24 (25%) | 0.917† |
| Ongoing tobacco use (%) | 299 | 30 (16%) | 46 (41%) | <0.001† |
| Problematic alcohol use (%) | 299 | 18 (10%) | 15 (13%) | 0.336† |
| Charlson comorbidity index | 302 | 1 (0–3) | 2 (1–3) | 0.099* |
| Chest pain at presentation (%) | 272 | 85 (50%) | 48 (47%) | 0.639† |
| Shortness of breath at presentation (%) | 275 | 78 (46%) | 49 (47%) | 0.809† |
| Syncope or presyncope at presentation (%) | 276 | 20 (12%) | 13 (13%) | 0.793† |
| Physical trigger (%) | 306 | 115 (60%) | 82 (72%) | 0.034† |
| Atypical variant (%) | 306 | 26 (14%) | 21 (18%) | 0.252† |
| Duration of hospitalization (d) | 306 | 6 (3–12) | 6 (3–10) | 0.955* |
| Duration of follow-up (y) | 277 | 0.1 (0–1.6) | 0.2 (0–1.8) | 0.594* |
Data are presented as median (IQR) for continuous variables and number (percentage) of patients for categorical variables. N represents the number of patients with non-missing values. IQR = interquartile range.
*
Wilcoxon rank sum test.
†
Pearson chi-squared test.