Evaluation and revision of questionnaires for use among low-literacy immigrant Latinos.

As more Spanish speaking immigrants participate in and become the focus of research studies, questions arise about the appropriateness of existing research tools. Questionnaires have often been adapted from English language instruments and tested among college-educated Hispanic-Americans. Little has been written regarding the testing and evaluation of research tools among less educated Latino immigrants. The purpose of this study was to evaluate and revise a battery of Spanish-language questionnaires for an intervention among immigrant Hispanic women. A three-step process was used to evaluate, adapt and test Spanish versions of the Self-Efficacy and Exercise Habits Survey, an abbreviated version of the Hispanic Stress Inventory-Immigrant version and the Latina Values Scale. The revised tools demonstrated acceptable validity and reliability. The adaptations improved the readability of the tools, resulting in a higher response rate, less missing data and fewer extreme responses. Psychometric limitations to the adaptation of Likert scales are discussed.