| Variable | Total | |
| Number of patients | 513 | |
| Age |
| |
| <1 month | 0 (0) | |
| 1 - 6 months | 36 (7%) | |
| 6 months - 1 year | 64 (12, 5%) | |
| 1 - 10 years | 170 (33, 14%) | |
| ≥10 years | 243 (47, 36%) | |
| Sex |
| |
| Male | 298 (58%) | |
| Female | 215 (42%) | |
| Etiology |
| |
| Malformative pathologies | Aqueduct stenosis Dandy-Walker | 251 (49%) |
| Tumors | Posterior fossa tumor Pineal region tumor Third ventricle tumor | 210 (41%) |
| Normal-pressure hydrocephalus |
| 20 (3, 8%) |
| Post meningitis hydrocephalus |
| 12 (2, 3%) |
| Others | Arachnoid cyst, posthemorrhagic hydrocephalus | 20 (3, 9%) |
| VP shunt first |
| |
| + | 12 (2, 3%) | |
| − | 501 (97, 7%) | |