Table 2.
Age-adjusted Purely Spatial Scan Statistics Output Showing Hot Spots of Cervical Cancer Incidence in Texas, 2014–2018a
| Clusterb | Coordinate/radius | Observed cases | Expected cases | RR | LLR | p-value |
|---|---|---|---|---|---|---|
| 1 | 26.515432 N, 97.579083 W / 339.23 km | 766 | 566.1 | 1.42 | 36.27 | <0.001 |
| 2 | 29.765751 N, 95.328238 W / 22.44 km | 538 | 402.2 | 1.38 | 22.71 | <0.001 |
| 3 | 32.646998 N, 96.700372 W / 14.33 km | 132 | 145.2 | 1.81 | 19.06 | <0.001 |
| 4 | 29.664167 N, 95.565104 W / 1.98 km | 22 | 5.9 | 3.73 | 12.83 | 0.017 |
| 5 | 32.841051 N, 100.070721 W / 215.33 km | 299 | 222.4 | 1.37 | 12.50 | 0.022 |
| 6 | 32.733049 N, 97.281788 W / 6.27 km | 55 | 26.2 | 2.11 | 12.06 | 0.028 |
| 7 | 31.157482 N, 94.713113 W / 112.04 km | 164 | 110.0 | 1.51 | 11.79 | 0.036 |
| 8 | 32.758616 N, 96.966177 W / 10.86 km | 118 | 74.3 | 1.60 | 11.09 | 0.058 |
| 9 | 29.550648 N, 98.420767 W / 0 km | 6 | 0.6 | 9.60 | 8.19 | 0.576 |
| 10 | 32.938731 N, 96.795192 W / 0 km | 5 | 0.4 | 11.78 | 7.75 | 0.728 |
| 11 | 32.769046 N, 97.386474 W / 0 km | 6 | 0.8 | 7.59 | 6.95 | 0.918 |
| 12 | 32.655616 N, 97.340516 W / 0 km | 5 | 0.6 | 8.34 | 6.20 | 0.988 |
| 13 | 32.324804 N, 96.011901 W / 47.00 km | 52 | 31.3 | 1.67 | 5.74 | 0.998 |
| 14 | 31.542402 N, 97.162452 W / 1.32 km | 8 | 1.8 | 4.43 | 5.71 | 0.999 |
Note: Boldface indicates statistical significance (p<0.05).
Poisson-based purely spatial scan statistic was used to identify areas with significantly higher than expected proportion (hot spots) of primary cervical cancer incidence in Texas. Maximum spatial cluster size was set at 25% of the population at risk, using circular scan window and Replication 999.
Additional cluster information: Cluster 1 – South Texas Plains/South Texas; Cluster 2 – Gulf Coast/Upper Gulf Coast; Cluster 3 – Prairies and Lakes/North Texas; Cluster 4 – Gulf Coast/Upper Gulf Coast; Cluster 5 – Panhandle Plains/West Texas; Cluster 6 – Prairies and Lakes/North Texas; Cluster 7 – Piney Woods/East Texas; Cluster 8 – Prairies and Lakes/North Texas; Cluster 9 – South Texas Plains/South Texas; Cluster 10 – Prairies and Lakes/North Texas; Cluster 11 – Prairies and Lakes/North Texas; Cluster 12 – Prairies and Lakes/North Texas; Cluster 13 – Prairies and Lakes/North Texas; and Cluster 14 – Prairies and Lakes/North Texas; LLR, log likelihood ratio.