The primary reason for attrition across all waves of

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Unformatted text preview: is representative. The primary reason for attrition across all waves of data is temporary and permanent migration. For example, in 2004, 21 percent of those interviewed in 2001 were away or had moved, which is comparable to the attrition rates due to out-migration of other longitudinal studies in Africa (Antony Chapoto and Thomas S. Jayne 2005; John Maluccio 2000; Simona Bignami–Van Assche, Reniers, and Weinreb 2003). No village ever refused to participate in data collection and less than 1 percent of those approached in 2004 refused to be interviewed. Despite the attrition across waves of the MDICP panel, baseline characteristics in 2004 are similar to those of a population-based survey that was also conducted in Malawi in 2004 (NSO Malawi 2005). In that survey, 72.8 percent of the women (age 15–49) living in rural Malawi were married or cohabitating with a partner (versus 71 percent in the MDICP 2004 data); 4.3 percent of women and 13.1 percent of men reported using a condom at last intercourse (versus 16.4 percent of the women and 27.3 percent of the men who reported using a condom in the previous year in the MDICP 2004 data); and 14 percent reported ever having an HIV test (versus 18 percent in the MDICP 2004 data). These comparisons provide support to the external validity of the findings of this study for other rural populations in Malawi, and perhaps other rural parts of Africa. Test refusals may also be a source of bias: 9 percent of those approached refused to be tested for HIV. In comparison to other studies conducting HIV testing, such as the DHS Malawi (2004), this is a relatively low refusal rate. This may be attributable to the method of testing through saliva, or to the fact that respondents were not required to learn their results at the time of testing. Observable characteristics (such as gender, age, or marital status) are not significant predictors of accepting an HIV test. Respondents’ prior beliefs of infection status also do not predict refusing an H...
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This document was uploaded on 01/28/2014.

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