Methodology for measuring vulnerability in MSM: comparison of web-based survey and face to face survey in Mexico
Background: MSM form one of the groups most affected by the HIV/AIDS epidemic in Mexico. Vulnerability and discrimination are part of a complex web which involves the MSM human rights. Because of this, it is important to develop methodologies to measure vulnerability of those groups most affected by HIV/AIDS
Methods: We made a secondary analysis of two surveys carried out in Mexico (2005-2006), with the aim of comparing different methodologies for measuring vulnerability. One survey was carried out through traditional face-to-face interviews with 1,111 MSM in four different cities in Mexico; and the second one, through electronic interviews submitted via a LGBT website (http://www.anodis.com) with the participation of 701 MSM from several states of the country. We compare both surveys side-by-side in six different discrimination categories: medical healthcare services, discrimination in work environment, family rejection, discrimination in schools, and discrimination in recreational and religious services.
Results: The comparative results between surveys are shown in Table I; some of the topics like health care services and discrimination in work environment are very similar. Results about discrimination experiences in schools are high in both surveys (27% and 20%). Nevertheless discrimination in recreational services, religious services and family support are remarkably different.
Conclusions: We tested differences to measure vulnerability in the surveys, found significant differences in the comparison between individual categories (p<0.05), therefore with these data we are not able to compare both interview methods. We need to realize better comparative studies that allow to develop an accurate methodology to measure vulnerability and discrimination
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