ABSTRACT
BACKGROUND: Few outcome measures were validated for assessing depressive symptoms in AD. Patient Health Questionnaire-9 (PHQ9) and the abridged PHQ2 are established patient-reported outcome measures of depressive symptoms. OBJECTIVE: We sought to examine the measurement properties of PHQ9 and PHQ2 in adult AD. A prospective dermatology-practice based study of 458 AD patients (age 18-97 years) was conducted. RESULTS: PHQ9 strongly correlated with Dermatology Life Quality Index, Patient-Reported Outcomes Measurement Information System (PROMIS) Sleep-Disturbance and Sleep-Related Impairment, and PROMIS Itch Questionnaire Mood and Sleep (PIQ-MS), and moderately correlated with Patient-Oriented Eczema Measure, Numeric Rating Scale (NRS) average-itch, NRS-sleep, Eczema Area and Severity Index, Scoring AD and Rajka-Langeland scores. PHQ2 had significantly weaker correlations than PHQ9 with PROMIS SD, SRI and PIQ-MS, but similar correlations with other outcomes. PHQ9 and PHQ2 had good discriminant validity. Changes from baseline in PHQ9 and PHQ2 were poorly or weakly correlated with changes of the other outcome measures. There was no differential item functioning of PHQ items. PHQ9 showed good reliability (intraclass correlation coefficient range: 0.80-0.87). PHQ2 had slightly lower reliability (0.76-0.82). CONCLUSIONS: PHQ9 and PHQ2 had similar measurement properties, but PHQ2 was more feasible to assess depressive symptoms in AD.
Subject(s)
Dermatitis, Atopic/diagnosis , Patient Health Questionnaire/classification , Patient Reported Outcome Measures , Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Prospective Studies , Young AdultABSTRACT
Resumen El objetivo fue evaluar las propiedades psicométricas de cinco versiones distintas del Cuestionario de Estilo Personal del Terapeuta (ETP-C), el cual indaga cinco funciones de la actividad terapéutica: Atencional (búsqueda de información), Operativa (intervenciones terapéuticas), Instruccional (establecimiento del encuadre terapéutico), Expresiva (grado de expresividad emocional) y de Involucración (compromiso). Para este estudio participaron 471 terapeutas de Argentina, quienes completaron la versión original del ETP-C, compuesta por 36 ítems. Luego se compararon los indicadores de ajuste de los cinco modelos disponibles del cuestionario. Se obtuvo que la versión portuguesa del EPT-C compuesto por 20 ítems, es el que mejores indicadores de ajuste presenta a pesar de que la confiabilidad del mismo no fue satisfactoria. Se discuten implicaciones teóricas y prácticas para la investigación en psicoterapia.
Abstract The objective was to evaluate the psychometric properties of five different versions of the Personal Style Therapist Questionnaire (PST-Q), which evaluate five functions of therapeutic activity: Attentional (seeking information), Operational (therapeutic interventions), Instructional (establishment of the therapeutic setting), Expressive (degree of emotional expressiveness) and Involvement (commitment).471 therapist participate in this study, who completed the original version of the PST-Q, consisting of 36 items. Adjustment indicators of the five models PST-Q available were then compared. As a result, the version of the PST-Q with best adjustment indicator was the Portuguese one made of 20 items, although the reliability was not satisfactory. Theoretical and practical implications were discussed for psychotherapy research.
