Predisposing factors | Patients | Controls | ||
Heredity | n: 113 | 37.5% | n: 1 | 0.8% |
Joint hypermobility | n: 192 | 64% | n: 3 | 2.5% |
Severe venous pooling | n: 216 | 64% | n: 18 | 15% |
Emotional stress and pain | n: 185 | 61.5% | n: 22 | 18% |
Drug treatment | n: 30 | 10% | n: 12 | 10% |
Postprandial syncope | n: 26 | 8.6% | n: 0 | 0% |
Fasting/ Dehydration | n: 29 | 9.6% | n: 4 | 3.3% |
Neurological diseases | n: 7 | 2.3% | n: 0 | 0% |
Prolonged standing | n: 18 | 6.0% | n: 0 | 0% |
Military standing formation | n: 33 | 11% | n: 0 | 0% |