Resumen de Development and Validation of the ff Instrument to Assess Family Functioning
Mary I. Barreras Miranda, Gerardo Muñoz Cortés, Laura Pérez Flores, Carlos Gómez Alonso, Mónica Fulgencio Juárez, María E. Estrada Andrade
Objective: to develop and validate a family functioning assessment instrument. Methods: validation study, conducted at the Family Medicine Unit No. 80 of the Mexican Institute of Social Security in Morelia, Michoacán, Mexico; from March 2018 to August 2019. Phase 1. The items were written using the McMaster model; phase 2. Test adequacy through qualitative analysis of items: presentation of the instrument, wording clarifying, relevance of variables to indicators, relevance of content and feasibility of application, application of statistical tests; item reduction, relevance, varimax rotation and variance; phase 3. Reliability and convergence validity against ff-sil. Results: phase 1. Construction of an initial instrument of 107 items with six domains. Phase 2. After a pilot test on one hundred individuals, 79 items with relevance >90 were chosen; and after a factorial analysis with a reduction factor, made by ten judges, a final instrument of 35 items was created with redistribution of the items by the varimax rotation method, six domains were assigned: problem solving (7 items), communication (10 items), roles (5 items), affective involvement (2 items), affective responses (8 items) and behavioral control (3 items); with a total variance of 74.1. Phase 3. Final instrument of 35 items that categorizes families into: functional (141-175 points), mild dysfunctional (106-140 points), moderate dysfunctional (71-105 points) and severe dysfunctional (35-70 points). Final instrument with Cronbach’s alpha of 0.962 vs. 0.905 of the ff-sil. Conclusion: a reliable 35-item instrument measuring family functioning was constructed.
