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The unfolding counter-transition in rural South Africa: mortality and cause of death, 1994-2009.

ABSTRACT: The HIV pandemic has led to dramatic increases and inequalities in adult mortality, and the diffusion of antiretroviral treatment, together with demographic and socioeconomic shifts in sub-Saharan Africa, has further changed mortality patterns. We describe all-cause and cause-specific mortality patterns in rural South Africa, analyzing data from the Agincourt health and socio-demographic surveillance system from 1994 to 2009 for those aged 5 years and older. Mortality increased during that period, particularly after 2002 for ages 30-69. HIV/AIDS and TB deaths increased and recently plateaued at high levels in people under age 60. Noncommunicable disease deaths increased among those under 60, and recently also increased among those over 60. There was an inverse gradient between mortality and household SES, particularly for deaths due to HIV/AIDS and TB and noncommunicable diseases. A smaller and less consistent gradient emerged for deaths due to other communicable diseases. Deaths due to injuries remained an important mortality risk for males but did not vary by SES. Rural South Africa continues to have a high burden of HIV/AIDS and TB mortality while deaths from noncommunicable diseases have increased, and both of these cause-categories show social inequalities in mortality.

SUBMITTER: Houle B

PROVIDER: S-EPMC4068997 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundIn southern Africa, a substantial health transition is underway, with the heavy burden of chronic infectious illness (HIV/AIDS and tuberculosis) paralleled by the growing threat of non-communicable diseases. We investigated the extent and nature of this health transition and considered the implications for primary health care.MethodsHealth and sociodemographic surveillance started in the Agincourt subdistrict, rural South Africa, in 1992. In a population of 70 000, deaths (n=6153) were rigorously monitored with a validated verbal autopsy instrument to establish probable cause. We used age-standardised analyses to investigate the dynamics of the mortality transition by comparing the period 2002-05 with 1992-94.FindingsMortality from chronic non-communicable disease ranked highest in adults aged 50 years and older in 1992-94 (41% of deaths [123/298]), whereas acute diarrhoea and malnutrition accounted for 37% of deaths (59/158) in children younger than 5 years. Since then, all-cause mortality increased substantially (risk ratio 1.87 [95% CI 1.73-2.03]; p<0.0001) because of a six-fold rise in deaths from infectious disease affecting most age and sex groups (5.98 [4.85-7.38]; p<0.0001), and a modest increase in deaths from non-communicable disease (1.15 [0.99-1.33]; p=0.066). The change in female risk of death from HIV and tuberculosis (15.06 [8.88-27.76]; p<0.0001) was almost double that of the change in male risk (8.13 [5.55-12.36]; p<0.0001). The burden of disorders requiring chronic care increased disproportionately compared with that requiring acute care (2.63 [2.30-3.01]; p<0.0001 vs 1.31 [1.12-1.55]; p=0.0003).InterpretationMortality from non-communicable disease remains prominent despite the sustained increase in deaths from chronic infectious disease. The implications for primary health-care systems are substantial, with integrated chronic care based on scaled-up delivery of antiretroviral therapy needed to address this expanding burden.

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The unfolding counter-transition in rural South Africa: mortality and cause of death, 1994-2009.

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