A social network approach to estimating seroprevalence in the United States
نویسندگان
چکیده
Results from a representative survey of respondents in Florida are given, concerning their knowledge about members of their personal network, and specifically how many people respondents know in selected subpopulations. We employ a method known as a "network scale-up method". By using a collection of subpopulations of known size, and also asking about one subpopulation (those who are seropositive) of unknown size, we make various estimates of personal network size and the size of the seropositive subpopulation. Our best (maximum likelihood, unbiased) estimates are 108 members of the network defined by "having been in contact with during the previous two years", and (approximately unbiased) 1.6 million for the seropositive subpopulation. Because of the proportional over-representation of AIDS (and presumably. therefore, seropositive) in Florida, by a factor of about two, this latter estimate could be an overestimate. © 1998 Elsevier Science B.V.
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