| Patient characteristics | Number of cases | Frequency (%) |
| Age in categories | ||
| Less than 6 years old | 8 | 14.55 |
| 6 - 15 years old | 25 | 45.45 |
| More than 15 years old | 22 | 40 |
| Total | 55 | 100 |
| Place of residence | ||
| Others | 9 | 16.36 |
| Yaoundé | 46 | 83.64 |
| Total | 55 | 100 |
| With family history | ||
| No | 21 | 38.18 |
| Yes | 34 | 61.82 |
| Total | 55 | 100 |
| Type of haemophilia | ||
| A | 42 | 76.36 |
| B | 13 | 23.64 |
| Total | 55 | 100 |
| With osteo-articular complications | ||
| No | 17 | 30.91 |
| Yes | 38 | 69.09 |
| With severity | ||
| Light | 4 | 7.27 |
| Moderate | 10 | 18.18 |
| Severe | 41 | 74.55 |
| Total | 55 | 100 |