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Interaction Patterns of Men Who Have Sex With Men on a Geosocial Networking Mobile App in Seven United States Metropolitan Areas: Observational Study

Interaction Patterns of Men Who Have Sex With Men on a Geosocial Networking Mobile App in Seven United States Metropolitan Areas: Observational Study

Newman assortativity coefficient, R, a parameter used to assess the extent to which a population exhibits assortative, neutral, or disassortative sexual mixing patterns, was calculated from mixing matrices using the following equation: where R is the assortativity coefficient and e is the mixing matrix whose elements are eij. Tr e is the trace of the mixing matrix (the sum of its diagonal elements), and || e2 || is the sum of the squared values of the elements in the mixing matrix.

Nadia N Abuelezam, Yakir A Reshef, David Novak, Yonatan Hagai Grad, George R Seage III, Kenneth Mayer, Marc Lipsitch

J Med Internet Res 2019;21(9):e13766