This report presents the evaluation and results of the first annual review of the Socioeconomic Level Index (INSE), within the framework of the working group formed by the Commission of Socioeconomic Level Index, formed with representatives of the Chamber of Research Companies Social and Market of Uruguay (CEISMU). The Work Commission on the INSE 2012 review was made up of Mariela Méndez and Diana Ortiz (IBOPE), Alain Mizrahi (RADAR Group), Andrés Pasquet and Florencia Racioppi (MERCOPLUS-Latin America) and Santiago Peyrou (Equipos Mori).