| Characteristics | Number of suspect cases (%) | Number of collected CSF samples (%) | Number of CSF sample not collected (%) | p-value |
| Age group |
|
|
| - |
| [0 - 5[ | 1339 (44.8) | 1326 (45.3) | 13 (20.3) |
|
| [5 - 10[ | 397 (13.3) | 392 (13.4) | 05 (7.8) |
|
| [10 - 15[ | 235 (7.9) | 231 (7.9) | 04 (6.2) |
|
| [15 - 20[ | 111 (3.7) | 107 (3.7) | 04 (6.2) |
|
| [20 - 25[ | 70 (2.3) | 69 (2.4) | 01 (1.6) |
|
| [25 - 30[ | 54 (1.8) | 54 (1.8) | 00 |
|
| [30 - 35[ | 54 (1.8) | 53 (1.8) | 01 (1.6) |
|
| [35 - 40[ | 67 (2.2) | 65 (2.2) | 02 (3.1) |
|
| [40 - 45[ | 45 (1.5) | 45 (1.5) | 00 |
|
| [45 - 50[ | 36 (1.2) | 36 (1.2) | 00 |
|
| [50 - 55[ | 43 (1.4) | 42 (1.4) | 01 (1.6) |
|