| Age range | Number of cases | Percentage % |
| 0 - 28 days | 32 | 6.10 |
| 1 month - 6 months | 73 | 13.90 |
| 7 months - 11 months | 190 | 36.19 |
| 12 months - 36 months | 155 | 29.52 |
| 37 months - 60 months | 75 | 14.29 |
| Total | 525 | 100 |