Aggregate mortality data do not tell us if AIDS mortality is uniformly reduced or if there is spatial differentiation. A total of 2432 male and 1864 female deaths (2000-2004) from AIDS in Chiang Rai are used to detect mortality clusters. Both male and female clusters are more or less in the same location implying similar risk factors; however, male clusters remain more prevalent as male patients are likely to be slower in getting treatment. The findings indicate non-random clustering and confirm that although mortality rates are significantly reduced in most areas some sub-districts need attention for follow-up public health efforts.
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