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Spatial clusters of people living with HIV/AIDS by risk of transmission in Texas Sonia Arbona PhD Praveen R. Pannala, MD, MPH Sharon K. Melville, MD, MPH May 26, 2009
Background ,[object Object],[object Object]
Study Purpose ,[object Object],[object Object]
Methods   Statistics ,[object Object]
Methods   Statistics (Cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Methods    Sample ,[object Object],[object Object]
Results    Number and location of clusters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Results   Cluster Statistics Table 1. Spatial clusters of HIV/AIDS in Texas by HIV mode of transmission in 2008   Mode of Transmission Cluster Location Observed cases Expected cases Relative risk estimate Log-likelihood ratio P  value IDU 1 Houston 1196 358.4 3.98 674.95 0.001 2 Fort Worth 108 8.15 13.49 180.09 0.001 3 Dallas 182 39.31 4.75 138.1 0.001 4 El Paso 30 4.4 6.84 32.02 0.001 5 Dallas 29 5.54 5.26 24.61 0.001 6 Waco 35 8.54 4.12 22.97 0.001 MSM 1 Dallas 4681 837.95 6.53 4501.07 0.001 2 Houston 4514 1132.83 4.57 3086.00 0.001 3 Austin 1585 711.75 2.30 410.11 0.001 4 San Antonio 390 70.93 5.56 347.54 0.001 5 El Paso 166 51.39 3.24 80.28 0.001 MSM/IDU 1 Houston 358 64.78 6.13 333.79 0.001 2 Dallas 262 69.62 4.03 161.25 0.001 3 Austin 198 53.40 3.90 118.44 0.001 4 Fort Worth 57 15.33 3.77 33.46 0.001 HRT 1 Houston 3858 1173.57 4.68 2353.98 0.001 2 Dallas 299 68.11 4.49 214.09 0.001 3 Dallas 179 61.59 2.94 74.25 0.001 4 Fort Worth 46 14.28 3.23 22.14 0.001
Results   Demographic Characteristics clustered not clustered 38.9% 61.1% Figure 2
Results   Spatial Clusters in Dallas – Fort Worth
Results   Spatial Clusters in Central Texas
Results   Spatial Clusters in Houston
Comments and Future Directions
Bibliography ,[object Object],[object Object],[object Object]

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Spatial clusters of HIV infection by mode of transmission in Texas

  • 1. Spatial clusters of people living with HIV/AIDS by risk of transmission in Texas Sonia Arbona PhD Praveen R. Pannala, MD, MPH Sharon K. Melville, MD, MPH May 26, 2009
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. Results Cluster Statistics Table 1. Spatial clusters of HIV/AIDS in Texas by HIV mode of transmission in 2008   Mode of Transmission Cluster Location Observed cases Expected cases Relative risk estimate Log-likelihood ratio P value IDU 1 Houston 1196 358.4 3.98 674.95 0.001 2 Fort Worth 108 8.15 13.49 180.09 0.001 3 Dallas 182 39.31 4.75 138.1 0.001 4 El Paso 30 4.4 6.84 32.02 0.001 5 Dallas 29 5.54 5.26 24.61 0.001 6 Waco 35 8.54 4.12 22.97 0.001 MSM 1 Dallas 4681 837.95 6.53 4501.07 0.001 2 Houston 4514 1132.83 4.57 3086.00 0.001 3 Austin 1585 711.75 2.30 410.11 0.001 4 San Antonio 390 70.93 5.56 347.54 0.001 5 El Paso 166 51.39 3.24 80.28 0.001 MSM/IDU 1 Houston 358 64.78 6.13 333.79 0.001 2 Dallas 262 69.62 4.03 161.25 0.001 3 Austin 198 53.40 3.90 118.44 0.001 4 Fort Worth 57 15.33 3.77 33.46 0.001 HRT 1 Houston 3858 1173.57 4.68 2353.98 0.001 2 Dallas 299 68.11 4.49 214.09 0.001 3 Dallas 179 61.59 2.94 74.25 0.001 4 Fort Worth 46 14.28 3.23 22.14 0.001
  • 9. Results Demographic Characteristics clustered not clustered 38.9% 61.1% Figure 2
  • 10. Results Spatial Clusters in Dallas – Fort Worth
  • 11. Results Spatial Clusters in Central Texas
  • 12. Results Spatial Clusters in Houston
  • 13. Comments and Future Directions
  • 14.