[Theoretical-logical model and judgment matrix of the effectiveness of the Expanded Family Health and Basic Healthcare Centers].

Primary health care requires work processes guided by collaborative inter-professional action to respond to health care needs. The Expanded Family Health and Basic Healthcare Center (NASF-AB) acts as an important device to expand the possibilities of care in this scenario. This study aims to describe the process of constructing a theoretical-logical model and judgment matrix to evaluate the effectiveness of the NASF-AB. Evaluative study, with a descriptive-qualitative approach using documentary research, in which 11 documents regulating the work process of NASF-AB were selected to support the theoretical-logical model. For the elaboration of the judgment matrix to evaluate the effectiveness of NASF-AB, we considered the fundamental concepts and expected competencies, with the definition of indicators and criteria for a staggered evaluation, which allows classifying the NASF-AB as effective, potentially effective, low effectiveness, and non-effective. Both the structuring of the model and the application of the matrix and its graphic expression are instruments that support the ideal functioning of the NASF-AB, being able to guide decision-making in the management and work process, in the care and pedagogical dimensions. The products of this investigation constitute theoretical and methodological devices to support the evaluation of the effectiveness of NASF-AB and to identify the weaknesses and potencies of its performance.