| (a) | ||||
| Geopolitical region | Meningitis cases | Population | IR (per 100,000) | Rate ratio |
| Northwest | 144,086 | 40,497,542 | 355.8 | 81.5 |
| Northeast | 31,088 | 21,469,225 | 144.8 | 33.2 |
| Northcentral | 5210 | 22,933,883 | 22.7 | 5.2 |
| Southsouth | 3022 | 23,780,792 | 12.7 | 2.9 |
| Southeast | 989 | 18,538,039 | 5.3 | 1.2 |
| Southwest | 1362 | 31,212,581 | 4.4 | Reference |
| (b) | ||||
| Population density | Meningitis cases | Population | IR (per 100,000) | Rate ratio |
| High | 90,841 | 57,031,901 | 159.2 | 2.1 |
| Medium | 53,157 | 45,166,916 | 117.7 | 1.6 |
| Low | 41,759 | 56,233,246 | 74.26 | Reference |
| (c) | ||||
| Absolute poverty % | Meningitis cases | Population | IR (per 100,000) | Rate ratio |
| Low | 2278 | 29,360,751 | 7.8 | Reference |
| Medium | 7905 | 39,881,488 | 19.8 | 2.6 |
| High | 68,642 | 495,485,94 | 138.5 | 17.9 |
| Very high | 106,932 | 39,641,231 | 269.7 | 34.8 |
| (d) | ||||
| Adult literacy % | Meningitis cases | Population | IR (per 100,000) | Rate ratio |
| Low | 149,963 | 48,912,976 | 306.6 | 41.6 |
| Medium | 29,280 | 29,962,622 | 97.7 | 13.3 |
| High | 2530 | 25,446,225 | 9.9 | 1.4 |
| Very high | 3984 | 54,110,240 | 7.4 | Reference |