| No. | % | |
| Reason for the 1st exposure | ||
| Hemorrhage | 25 | 78.1 |
| Surgery | 7 | 21.9 |
| Surgery during the 50th exposures days | ||
| Yes | 11 | 34.4 |
| No | 21 | 65.6 |
| Type of exposure | ||
| Major | 25 | 78.1 |
| Minor | 7 | 21.9 |
| Average FVIII dosage | ||
| -35 UI/kg/day | 11 | 34.4 |
| 35.1-50 UI/kg/day | 19 | 59.4 |
| +50. 1UI/kg/day | 2 | 6.3 |