| Preceding illness | No. of pts | % |
| URTI | 13 | 12.15% |
| Bronchiolitis | 1 | 0.93% |
| Asthma | 1 | 0.93% |
| Gastrenteritis | 1 | 0.93% |
| Abdominal trauma | 1 | 0.93% |
| Henoch Shonlein Purpura | 1 | 0.93% |
| none | 89 | 83.18% |
| Congenital anomalies | ||
| CHD | 2 | 1.87% |
| G6pD deficiency | 1 | 0.93% |
| Malrotation | 1 | 0.93% |
| UDT | 1 | 0.93% |
| Inguinal hemia (not repaired) | 1 | 0.93% |
| None | 101 | 94.39% |
| Recurrence | ||
| No | 104 | |
| Yes | ? | 1 |
| 1-10d | 1 | |
| >10d | 1 | |