Table 4

Cluster Analysis of Later Stage* Prostate Cancer Cases – Maryland Cancer Registry, 1992–1997

Radius (km)
 # Block groups in Cluster
 # Later Stage Cases Expected
 # Later Stage Cases Observed
 Relative Risk
 P Value
Map 5. Unadjusted Analysis





     Cluster 1
 85.32
 1436
 1481.0
 1743
 1.18
 .001
     Cluster 2
 20.72
 88
 93.8
 182
 1.94
 .001
     Cluster 3
 41.92
 291
 512.7
 366
 0.71
 .001
     Cluster 4
 10.61
 316
 455.8
 325
 0.71
 .001
Map 6. Adjusted Analysis **





     Cluster 1
 24.71
 96
 98.3
 191
 1.94
 .001
     Cluster 2
 69.96
 326
 372.5
 533
 1.43
 .001
     Cluster 3
 39.82
 1208
 1633.4
 1398
 0.86
 .001
     Cluster 4
 4.12
 286
 248.4
 329
 1.32
 .029
Map 7. Adjusted Analysis ***





     Cluster 1
 20.65
 95
 104.9
 188
 1.79
 .001
     Cluster 2
 69.96
 326
 394.8
 533
 1.35
 .001
     Cluster 3
 47.90
 676
 1014.0
 831
 0.82
 .001

* Among cases receiving staging, those cases diagnosed at Stages 2–7 vs. Stage 1.

** Expected Rate Adjusted for Race, Age, Grade, and Year of Diagnosis.

*** Expected Rate Adjusted for Age, Race, Grade, Year of Diagnosis, and Area-Level Census Characteristics.

Klassen et al. International Journal of Health Geographics 2005 4:1   doi:10.1186/1476-072X-4-1

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