Screening Patients Who Speak Spanish for Low Health Literacy.

Background: Inadequate health literacy is a national health problem that affects about 90 million people from all racial and ethnic groups in the United States. Conceptual and empirical models of health literacy position language as one of the most significant contributors to health literacy.

Objective: A validated Spanish health literacy screening question asks how confident patients are at filling out medical forms, but it does not clarify whether the forms are in English or in Spanish, contributing to ambiguity and potentially affecting validity. The purpose of this study was to compare responses to questions that clarified the language of the forms referenced in the validated screening question; to explore how the clarified items predicted scores on a measure of health literacy; and to compare the predictive ability of the clarified health literacy items to that of a question about patients' self-reported English proficiency.

Methods: Participants who speak Spanish ( = 200) completed the following surveys: Spanish Health Literacy Screening Question that clarified "English forms" (HLSQ-E) and that clarified "Spanish forms" (HLSQ-S), self-reported English proficiency (SEP), demographic questions, the Short Test of Functional Health Literacy for Adults Spanish (S-TOFHLA-S), and the Newest Vital Sign-Spanish (NVS-Spanish).

Key Results: Participants reported less confidence with English medical forms than Spanish forms. The sensitivity of screening approaches varied; each predicted inadequate health literacy on the NVS-Spanish and S-TOFHLA-S with different levels of sensitivity, specificity, and accuracy. In general, the HLSQ-E was a better predictor of inadequate health literacy than the HLSQ-S; however, the SEP performed nearly as well as the HLSQ-E.

Conclusion: "How confident are you at filling out medical forms in English…" more appropriately identified patients with inadequate health literacy who speak Spanish. Health literacy screening practices should consider the patient's language and the language of the health care system and use questions that are less ambiguous. .

Plain Language Summary: This project focused on patients who speak Spanish and who have a hard time understanding health information. We wanted to find out the best ways to identify these patients so that doctors and nurses can be sure to give them information in ways that they can understand. We tested screening questions that can identify these patients.