Validity and reliability of the St George's Respiratory Questionnaire after adaptation to a different language and culture: the Spanish example

Abstract

For the adaptation, the forward and back-translation method by bilinguals was used, together with professional committee and lay panel. Once tested for feasibility and comprehension, 318 male chronic obstructive pulmonary disease (COPD) patients with a wide range of disease severity completed the Spanish version of the SGRQ. The clinical status of the patients was evaluated concurrently with the measurement of health status. Lung function was assessed in the 2 months before or after the questionnaire administration.The Spanish version of the SGRQ was acceptable and easy to understand. Cronbach's alpha reliability coefficient was 0.94 for the overall scale and 0.72 for "Symptoms", 0.89 for "Activity", and 0.89 for "Impacts" subscales. Correlation coefficients between the overall score and dyspnoea and % forced expiratory volume in one second (FEV1) were 0.59 and -0.45, respectively, and these correlations were higher than those observed between the clinical variables and the Nottingham Health Profile, a generic measure of health-related quality of life.Results of the study suggest that the Spanish version of the SGRQ is conceptually equivalent to the original, and similarly reliable and valid. Although further studies should complete the adaptation work, results suggest that the SGRQ may already be used in Spain and in international studies involving Spanish respiratory patients. According to the present approach, it appears to be feasible to adapt a specific questionnaire on health-related quality of life in respiratory disease to another language and culture. Eur Respir J., 1996Respir J., , 9, 1160Respir J., -1166

Translation and cultural adaptation of the Perceived Stigmatization Questionnaire for burn victims in Brazil

“…The review by the Experts Panel was characterized as an important step to identify terms that could not be understood by the target population, allowing them to be changed before the back-translation, as suggested by the authors (15) .…”

“…The step of cultural adaptation was performed according to the methodology suggested in the literature (6)(7)(15)(16) . These steps were adopted for validation study of instruments of burn patients in Brazil (20) .…”

“…The adaptation process was conducted according to the steps outlined in the literature described below (6)(7)(15)(16) :…”

Adaptação cultural do "Questionnaires for knowledge and Compliance with Standard Precaution" para o português brasileiro

“…(12,13) The authors explain that the work of the committee before the back-translation can help identify…”

“…The process of cultural adaptation followed national and international recommendations: (10,(12)(13) 1) translation into Portuguese; 2) synthesis of the translations; 3) assessment of conceptual, cultural, semantic and idiomatic equivalences by the committee of experts; 4) back-translation; 5) obtainment of the Portuguese version and comparison with the original version of the instrument; 6) semantic validation; and 7) pretest with the final version of the instrument in Portuguese.…”