Table 3.
Geographical clusters of brain cancer mortality among U.S. adult women, 1986 to 1995
| Approximate Cluster Location | Expected Cases | Observed Cases | RR | P-value |
|---|---|---|---|---|
| Clusters with High Risk | ||||
| A1: Arkansas, Mississippi, Louisiana | 2328 | 2830 | 1.22 | 0.0001 |
| A2: North Carolina and South Carolina | 1518 | 1783 | 1.17 | 0.0001 |
| A3: Oklahoma and Northern Texas | 1496 | 1709 | 1.14 | 0.003 |
| A4: Minnesota, North Dakota, South Dakota, Nebraska | 2369 | 2616 | 1.10 | 0.01 |
| A5: Western Kentucky | 249 | 328 | 1.32 | 0.06 |
| A6: Western Washington and Oregon | 609 | 730 | 1.20 | 0.07 |
| A7: Central Kansas | 152 | 210 | 1.38 | 0.27 |
| A8: Eastern Texas | 595 | 690 | 1.16 | 0.94 |
| A9: Southeastern Michigan | 1286 | 1420 | 1.10 | 0.98 |
| Clusters with Low Risk | ||||
| A10: Northern New Jersey | 2300 | 1809 | 0.79 | 0.0001 |
| A11: Southern Texas | 214 | 127 | 0.59 | 0.0001 |
| A12: New Mexico, Arizona, Colorado | 1049 | 849 | 0.81 | 0.0001 |
| A13: New Jersey, Delaware | 909 | 769 | 0.85 | 0.0602 |
Abbreviation: RR, relative risk.