Para recolectar la informacion se realizaron 100 visitas domiciliarias; se aplicaron 2 instrumentos para c/u, (calidad de atencion y apgar familiar); para la tabulacion, se utilizaron tablas de contingencia; la informacion se presento a razon de disparidad, determinando la fuerza de asociacion entre los factores de riesgo estudiados, de acuerdo con las hipotesis planteadas. Se pudo determinar que la insatisfaccion de los usuarios para la calidad de los servicios ofertados por el H.M.R.S. es un factor predisponente para inasistencia a los controles por consulta externa. Se identifico que no hay evidencia estadisticamente, que el presentar insatisfaccion, representa un factor asociado para la inasistencia a tratamiento por consulta externa. Para la funcionalidad familiar, se demostro que el 96.7% de cada 100 casos presentan disfuncionalidad familiar, y un 89.7% de cada 100 controles tambien presentan disfuncion familiar, demostrando que esta variable es una caracteristica principal de los pacientes mentales en general. Para concluir, la calidad de atencion como la funcionalidad familiar, representan un factor predisponente a presentar inasistencia, pero no son la principal causa por la cual los usuarios del Hospital Mental Rudesindo Soto ( HMRS) no acuden a los controles programados por consulta externa de acuerdo a lo investigado. Palabras clave: Enfermedad mental, funcionalidad familiar, adherencia al tratamiento. Abstract For the harvesting of the information 100 domiciliary visits were realised; 2 instruments for c/u were applied, (quality of attention and to apgar familiar); for the tabulation, contingency tables were used, and the information I appear at the rate of disparity, determining the force of association between the studied factors of risk, in agreement with the raised hypotheses. With the investigation it was possible to be determined that the dissatisfaction of the users for the quality of the services supplied by the H.M.R.S is a factor prearranger for inasistencia to the controls by external consultation. I identify myself that there is no evidence statistically, that presenting/displaying dissatisfaction, represents a factor associated for the inasistencia treatment by external consultation. For the familiar functionality, one demonstrated that the 96,7% of each 100 cases present/display familiar disfunctionality, and 89,7% of each 100 controls also present/display familiar dysfunction, demonstratingthat his variable is a basic characteristics of the mental patients generally. In order to conclude, the quality of attention like the familiar functionality, represents a factor prearranger to present/display inasistencia, but they are not the main cause by which the users of the HMRS do not go to the controls Key words : Mental Illness, family functioning, adherence to treatment