Charing Cross Venous Ulcer Questionnaire - Brazil: bicentric study of reliability

Abstract Objective To verify the internal consistency and stability of the Charing Cross Venous Ulcer Questionnaire - Brazil (CCVUQ-Brazil). Methods This was a methodological study conducted in two cities from different regions of Brazil (Goiania and Niteroi), from June 2016 to June 2018. The sample for internal consistency was composed of 112 individuals and for stability 74 participants were evaluated. All the individuals presented with a venous ulcer and received care in the public health network. For internal consistency analysis the Cronbach's alpha was calculated. The questionnaire was administered twice with a 30 minutes interval and for the stability analysis the intraclass correlation coefficient (ICC) was calculated. Results The CCVUQ-Brazil presented a Cronbach's alpha score of 0.92, and for the domains (social interaction, domestic activities, aesthetics and emotional state) it was above 0.70. The stability was excellent (ICC = 0.96) for total score of the questionnaire and for the majority of the domains. Conclusion The CCVUQ- Brazil showed good internal consistency, considering the two locations analyzed, and excellent stability in the Goiania.