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International Journal of Epidemiology, Vol 26, 408-413, Copyright © 1997 by International Epidemiological Association

ARTICLES

HIV-related risk factors of blood donors in northern Thailand before and after knowing HIV test results

P Sawanpanyalert, W Uthaivoravit, H Yanai, K Limpakarnjanarat, TD Mastro and KE Nelson
Department of Medical Services, Ministry of Public Health, Muang Nonthaburi, Thailand.

BACKGROUND: The epidemic of Human Immunodeficiency Virus (HIV) infection led blood banks to initiate donation deferral criteria based on self-reported risk factors. However little information is available on the differences in reporting risk factors before and after HIV status is known. METHODS: Between April and July 1994, blood donors in a provincial hospital in northern. Thailand were interviewed at the time of donation, about their demographic characteristics and risk factors. All donors had agreed to learn their test results and were called back for post-test counselling and reinterview. RESULTS: HIV- positive blood donors were more likely to change from 'denying' to 'acknowledging' risk factors while HIV-negatives were more likely to change from 'acknowledging' to 'denying'. The differences between risk factors obtained before and after test results were known resulted in stronger, weaker or even opposite risk measures. CONCLUSION: The study results raise questions about the impact of the differences in reporting HIV-related risk factors by the donors on how effective donation deferral criteria can be developed.
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