Abstract
ObjectiveTo evaluate the psychometric properties of a newly developed Medication Literacy Assessment in Spanish and English (MedLitRxSE). DesignDescriptive, nonexperimental, cross-sectional study. SettingEl Paso, TX, from December 2006 to June 2009. Participants181 English- or Spanish speaking adults. InterventionSurvey administered in two phases. Main outcome measuresDescriptive statistics, internal consistency, confirmatory factor analysis (CFA) and fit indices, and criterion-related validity. ResultsThe 20-item MedLitRxSE tool showed adequate internal consistency and reliability, and CFA revealed overall good model fit. In phase 2, the shorter 14-item MedLitRxSE showed good total test reliability and correlated well with the Short Test of Functional Health Literacy in Adults. Item response theory analyses showed no language bias and a one-dimensional (i.e., one factor) model of medication literacy. ConclusionThe initial and latest shorter version of the MedLitRxSE tool demonstrated good psychometric properties. This tool may provide a new option to assess “medication literacy” in English and Spanish.
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