Table 6.
Geographical clusters of higher mortality from brain cancer for children (age under 20) in the United States, 1986 to 1995
| Approximate Cluster Location | Expected Cases | Observed Cases | RR | P-value |
|---|---|---|---|---|
| D1: Western North and South Carolina | 51 | 86 | 1.67 | 0.24 |
| D2: Northern California | 4.9 | 16 | 3.29 | 0.74 |
| D3: Michigan and Northern Ohio | 250 | 318 | 1.27 | 0.44 |
| D4: Southern South Carolina | 9.5 | 24 | 2.53 | 0.79 |
| D5: Western Kentucky and Tennessee | 88 | 127 | 1.45 | 0.77 |
| D6: Northern Wisconsin | 2.4 | 10 | 4.13 | 0.98 |
| D7: Eastern Nebraska | 3.6 | 12 | 3.33 | 0.99 |
Abbreviation: RR, relative risk.