Lay diagnosis of causes of death for monitoring AIDS mortality in Addis Ababa, Ethiopia

Authors


Authors
Eduard Sanders, Wellcome Trust Research Laboratories, Kenya Units, PO Box 230, Kilifi, Kenya. Tel.: +254 415 22 535; Fax: +254 415 22 390; E-mail: esanders@kilifi.mimcom.net (corresponding author).
Georges Reniers, Population Studies Center, University of Pennsylvania, USA.
Ab Schaap, Ethio-Netherlands AIDS Research Project, Ethiopian Health and Nutrition Research Institute.
Nico Nagelkerke, Department of Public Health, Erasmus University, Rotterdam, The Netherlands.
Roel Coutinho, Division of Public Health and Environment; Municipal Health Service, Amsterdam, The Netherlands.

Summary

Lay diagnoses of death collected at burial sites were validated against two ‘gold standards’: the hospital discharge diagnosis of causes of death obtained by a surveillance of hospital deaths (including autopsy results) and the physician review of verbal autopsies (VAs) that were carried out for a sample of cemetery records. The diagnostic indicators of the lay diagnoses were then used to provide estimates of the share of AIDS-attribuTable mortality. The verbal autopsy results provide an independent estimate of the percentage of AIDS deaths. From a total of 21 274 burial records, 2546 hospital discharge diagnoses, 1480 outcomes of autopsies and 200 adult verbal autopsies were gathered over a period of 1 year starting from February 2001. Independent of the gold standard, lay diagnoses such as lung disease and cold have a specificity of about 90% and a combined sensitivity of about 55% in determining AIDS mortality. Without a significant loss in specificity, the sensitivity increases to 60–65% when diarrhoea, TB, herpes zoster and mental or nerve problem are included. We thus conclude that even in the presence of a reluctance to talk of HIV/AIDS, lay diagnosis of causes of death can be used for monitoring AIDS mortality. Lung disease and cold, in particular, have become well-known euphemisms for AIDS in the community. The share of AIDS deaths in the adult population (20–54) is estimated at 68%, without noticeable differences between men and women. Our results confirm the high impact of HIV/AIDS on mortality as was estimated by epidemiological projections for Addis Ababa.

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