A method for identifying comparison counties: application to a rural telemedicine evaluation project

Autor: Joyce A. Mitchell, Lanis L. Hicks, S E Koenig, Richard W. Madsen, Weldon Webb, Barry Kling, Keith E. Boles, Joe Tracy
Rok vydání: 1999
Předmět:
Zdroj: Journal of Telemedicine and Telecare. 5:182-188
ISSN: 1758-1109
1357-633X
DOI: 10.1258/1357633991933602
Popis: The evaluation of telemedicine activity in rural communities is complicated by the fact that most telemedicine sites are chosen because of their existing telecommunications infrastructure and institutional relationships, not by a random selection process. In addition, it is difficult to draw conclusions about the effects of telemedicine without a careful analysis of parallel changes in communities which do not have access to telemedicine services. We have developed a method of identifying comparable counties based on an aggregate measure of health status. A set of 66 variables was collected in a previous project to develop a model to evaluate the relative health status of the population in Missouri. A stepwise regression was used to identify a subset of 15 variables that had the highest predictive value for the health status of a county. Distance measures were then used to identify six counties which were most similar to three telemedicine counties. The method can be used with any study set chosen non-randomly, to identify similar objects that can be used for comparative purposes.
Databáze: OpenAIRE