Table 2. Risk factors for severe short-term outcomes within 10 days (univariate analysis).
| Severe Outcomes | |||
|---|---|---|---|
| Yes (%) (n = 329) | No (%) (n = 3059) | p-value* | |
| Male gender, n (%) | 196 (60) | 1334 (44) | <0.0001 |
| Age, n (%) | <0.0001 | ||
| < 45 years | 24 (7) | 869 (28) | |
| ≥ 45 and < 65 years | 56 (17) | 658 (22) | |
| ≥ 65 years | 249 (76) | 1532 (50) | |
| Syncope during exertion, n (%) | 31 (9) | 187 (6) | 0.0211 |
| Trauma following syncope, n (%) | 64 (19) | 592 (19) | 0.9651 |
| Abnormal ECG, n (%) | 229 (70) | 1208 (39) | <0.0001 |
| Medical history, n (%) | |||
| Cardiovascular disease | 161 (49) | 743 (24) | <0.0001 |
| Cerebrovascular disease | 132 (40) | 545 (18) | <0.0001 |
| Arterial hypertension | 154 (47) | 1104 (36) | 0.0001 |
| Previous syncope | 109 (33) | 964 (31) | 0.5491 |
| Absence of prodrome, n (%) | 126 (38) | 1002 (33) | 0.0430 |
*Chi-square test; ECG: electrocardiogram