ABSTRACT
Abstract Introduction: The Lambert's Outcomes Questionnaire (OQ-45) is a 45-item self-administered instrument used to measure clinical outcomes in psychotherapy. It measures functioning through three areas: symptoms distress, interpersonal relations and social role. The objective of this paper is to assess the reliability and the validity of its Spanish version. Method: A sample of 639 subjects, non-clinical and clinical, completed the instrument. Results: The psychometric evidences of the questionnaire showed an adequate internal consistency (.97 and .91) and acceptable convergent validity with the BDI, STAI, PSS and SF-12. The Confirmatory Factor Analyses suggested a bifactor structure. The cut-off points have been established for the subscales and total score (54.5), considering the clinical criterion, which means, prioritizing slightly the sensibility over the specificity. The RCI was 3.80 and Minimum Change Score 17.56. Conclusion: The OQ-45 showed acceptable psychometric properties, providing support for using this version of the questionnaire to assess Spanish's functionality. Given these findings, this tool could help clinicians evaluate treatment efficacy and establish psychotherapy goals.
Resumen Introducción: El instrumento Outcome Questionnaire (OQ-45) desarrollado por Lambert, se trata de una escala auto-administrada de 45-ítems que se utiliza para medir los resultados clínicos en psicoterapia. Esta herramienta evalúa el funcionamiento por medio de tres áreas: síntomas de malestar, relaciones interpersonales y rol social. El objetivo de este artículo es evaluar la fiabilidad y la validez de la versión española. Método: Una muestra de 639 personas, clínica y no clínica, cumplimentaron dicho instrumento. Resultados: Las evidencias psicométricas del cuestionario mostraron una consistencia interna adecuada (.97 y .91) y una validez convergente aceptable con las siguientes escalas: BDI, STAI, PSS y SF-12. Los análisis factoriales confirmatorios han sugerido una estructura bifactorial. Los puntos de corte se han establecido para las subescalas y la puntuación total (54.5), teniendo en cuenta el criterio clínico, lo que significa que se ha priorizado ligeramente la sensibilidad sobre la especificidad. El RCI ha sido de 3.80 y la puntuación mínima de cambio de 17.56. Conclusión: El OQ-45 ha mostrado propiedades psicométricas aceptables, que apoyan el uso de esta versión para valorar la funcionalidad de los españoles y, como consecuencia, podría ayudar a los clínicos a evaluar la eficacia del tratamiento y establecer objetivos en psicoterapia.
ABSTRACT
Abstract The past two decades have witnessed a proliferation of positive psychological interventions for clinical and nonclinical populations, and recent research, including meta-analyses, is providing evidence of its effectiveness. Most interventions have focused on increasing life satisfaction, positive affect, and psychological well-being. Manualized, multi-component interventions based on a comprehensive theory are scarce. Keyes' concept of mental health and flourishing (subjective, psychological, and social well-being) is an overarching theoretical framework to guide the design of a multi-component psychological intervention to cultivate well-being and personal development. Therefore, the purpose of this study was to design a theory-driven positive intervention and to pilot test the intervention. The manual presents an 8-week group program that includes homework activities. A sample of 56 young adults completed the intervention. Participants were assessed at base line, after termination, and at a 6-month follow-up session. Standardized instruments were used to assess the dimensions of mental health proposed by Keyes. Pre- and post-test measures of subjective, psychological, and social well-being showed significant differences, as did the total mental health scores. At 6-month follow-up, differences remained in subjective and psychological well-being and in positive mental health, with smaller effect sizes. Limitations of these preliminary findings as well as future lines of research and improvements in this manualized intervention are proposed in the light of current research on positive interventions.