Reliability and validity of a questionnaire on cognition, attitude and behavior towards biobanks / 中华医学科研管理杂志

ABSTRACT

Objective To test and validate the comprehensiveness,usability and reliability of the questionnaire we made for publicity efforts of biobanking activities in China.We aim to learn public attitudes toward biobanking donation of biological materials,collection and long-term storage for biomedical research.Methods In the cross-sectional study,292 participants were interviewed with the self-administered questionnaire.The survey questionnaire presents an extensive battery of questions on demographic information,participation of previous studies,cognition of biobank and related concepts,opinions on biobank-related issues and trust on healthcare system.Different statistic methods were taken to do item analysis,reliability and validity evaluation.Results The Cronbach's α coefficient of the whole questionnaire was 0.850 and the cognition and attitude were the two factors with the highest internal reliability.All the Spearman correlation coefficients were large than 0.5 (p＜0.01) . Three factors explained 59.2％ of the questionnaire structure found by factor analysis,and all factors could be regarded as cognition factors,attitude factors and behaviors factors.Conclusions The survey questionnaire is evaluated to be reliable and applicable to gathering data on publicity efforts to assess the public attitude towards biobanking activities in China.