Does the XXXX assessment test (CAT(TM)) questionnaire produce similar results when self- or interviewer administered?

@entity1 @entity1576 @entity1030
PURPOSE: The @entity1030 assessment test (CAT) is a questionnaire that assesses the impact of @entity1030 ( @entity1030 ) on health status, but some @entity1 have difficulties filling it up by themselves. We examined whether the mode of administration of the Spanish version of CAT (self vs. interviewer) influences its scores and/or psychometric properties. METHODS: Observational, prospective study in 49 Spanish centers that includes clinically stable @entity1030 @entity1 (n  =  153) and @entity1 hospitalized because of an exacerbation (ECOPD; n  =  224). The CAT was self-administered (CAT-SA) or administered by an interviewer (CAT-IA) based on the investigator judgment of the @entity1 's capacity. To assess convergent validity, the Saint George's @entity1576 Questionnaire (SGRQ) and the London Chest Activity of Daily Living (LCADL) instrument were also administered. Psychometric properties were compared across modes of administration. RESULTS: A total of 118 @entity1 (31  %) completed the CAT-SA and 259 (69  %) CAT-IA. Multiple regression analysis showed that mode of administration did not affect CAT scores. The CAT showed excellent psychometric properties in both modes of administration. Internal consistency coefficients (Cronbach's alpha) were high (0.86 for CAT-SA and 0.85 for CAT-IA) as was test-retest reliability (intraclass correlation coefficients of 0.83 for CAT-SA and CAT-IA). Correlations with SGRQ and LCADL were moderate to strong both in CAT-SA and CAT-IA, indicating good convergent validity. Similar results were observed when testing longitudinal validity. CONCLUSIONS: The mode of administration does not influence CAT scores or its psychometric properties. Hence, both modes of administration can be used in clinical practice depending on the physician judgment of @entity1 's capacity.
