Variable | p Value | OR (95% CI) | Regression coefficient | Score |
Palpitations preceding syncope | <0.001 | 64.8 (8.9 to 469.8) | 4.2 | 4 |
Heart disease or abnormal ECG, or both | <0.001 | 11.8 (7.7 to 42.3) | 2.9 | 3 |
Syncope during effort | <0.001 | 17.0 (4.1 to 72.2) | 2.8 | 3 |
Syncope while supine | 0.007 | 7.6 (1.7 to 33.0) | 2.0 | 2 |
Precipitating or predisposing factors, or both* | 0.01 | 0.3 (0.1 to 0.8) | −1.1 | −1 |
Autonomic prodromes† | 0.02 | 0.4 (0.2 to 0.9) | 0.8 | −1 |
*Warm-crowded place/prolonged orthostasis/fear–pain–emotion; †nausea/vomiting.