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KAIS 2007 1 - Kenya National AIDS & STI Control Programme ...

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3.10 WEALTH INDEXFigure 3.10a HIV prevalence by wealth index 1 among adults aged 15-49 years, 2003KDHS and <strong>2007</strong> <strong>KAIS</strong>.1412KDHS 2003<strong>KAIS</strong> <strong>2007</strong>109.8HIV Prevalence (%)868.46.58.04.86.97.17.76.66.77.443.620Lowest Second Middle Fourth Highest TotalWealth IndexFigure 3.10a. From 2003 to <strong>2007</strong>, HIV prevalence significantly increased among persons inthe lowest wealth quintile and significantly decreased among persons in the highest wealthquintile.HIV prevalence varied significantly by wealth index in the 2003 KDHS but not in the <strong>2007</strong> <strong>KAIS</strong>.Persons in the lowest quintiles of wealth had the lowest HIV prevalence in 2003 but the highest HIVprevalence in <strong>2007</strong>. The differences in HIV prevalence between 2003 and <strong>2007</strong> were significant amongall wealth quintiles except the second and fourth quintiles. Most persons aged 15‐49 years (97.5%) inthe lowest quintile lived in rural areas, supporting the apparent trend toward increased prevalence inrural areas, particularly among men, from 2003 to <strong>2007</strong> (see figure 3.6).1The wealth index was a composite measure of the living standard of a household, calculated using data on ahousehold’s ownership of selected assets, materials used for housing construction, and water access and sanitationfacilities. The wealth index placed households on a continuous scale of relative wealth using principal componentsanalysis. Individuals were ranked according to the score of the household in which they resided and the sample wasdivided into five groups, each with an equal number of individuals (quintiles), ranging from the lowest to highest levelof wealth.<strong>KAIS</strong> <strong>2007</strong> 62

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