Table 3

Statistically significant spatiotemporal clusters of accidental poisoning mortality in Texas by gender and race/ethnicity
Cluster
 Time Period
 No. of Observed Cases
 Annual age-adjusted rate (per 100,000)
 Relative Risk
 p-value
All populations




Primary cluster
 1998–2001
 1095
 5.7
 2.056
 0.001
Secondary cluster 1
 1985–2001
 637
 6.8
 2.448
 0.001
Secondary cluster 2
 1995–2001
 1419
 4.5
 1.598
 0.001
Secondary cluster 3
 1995–2001
 886
 4.6
 1.661
 0.001
All Males




Primary cluster
 1985–2001
 575
 10.9
 2.744
 0.001
Secondary cluster 1
 1995–2001
 960
 6.8
 1.711
 0.001
Secondary cluster 2
 1998–2001
 685
 7.4
 1.863
 0.001
Secondary cluster 3
 1994–2001
 704
 6.4
 1.620
 0.001
All Females




Primary cluster
 1997–2001
 456
 3.9
 2.371
 0.001
Secondary cluster 1
 1996–2001
 387
 2.8
 1.751
 0.001
Secondary cluster 2
 1997–2001
 207
 2.9
 1.786
 0.001
White Population




Primary cluster
 1998–2001
 785
 7.4
 2.480
 0.001
Secondary cluster 1
 1996–2001
 886
 5.2
 1.743
 0.001
Secondary cluster 2
 1995–2001
 598
 4.8
 1.601
 0.001
White Males




Primary cluster
 1998–2001
 482
 9.3
 2.273
 0.001
Secondary cluster 1
 1995–2001
 697
 7.2
 1.768
 0.001
Secondary cluster 2
 1994–2001
 621
 6.2
 1.509
 0.001
White Females




Primary cluster
 1998–2001
 300
 5.6
 2.940
 0.001
Black Population




Primary cluster
 1993–2001
 345
 6.3
 1.800
 0.001
Black Males




Primary cluster
 1993–2001
 236
 9.1
 1.867
 0.001
Black Females




Primary cluster
 1996–1998
 2
 2338.7
 1048.700
 0.033
Hispanic Population




Primary cluster
 1985–2001
 467
 6.0
 2.730
 0.001
Secondary cluster 1
 1994–2001
 342
 3.8
 1.730
 0.001
Hispanic Males




Primary cluster
 1985–2001
 410
 11.2
 3.130
 0.001
Secondary cluster 1
 1995–2001
 239
 6.0
 1.663
 0.001
Hispanic Females




Primary cluster
 1994–2001
 84
 1.8
 2.264
 0.001

Nkhoma et al. International Journal of Health Geographics 2004 3:25   doi:10.1186/1476-072X-3-25

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