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Health Literacy Assessment Using Talking Touchscreen Technology

Characteristics

Domains assessed: Prose: Comprehension, Numeracy, Information seeking: Interactive media navigation, Information seeking: Document
Specific context: Health Promotion
Validation sample population age: Older Adults: 65+ years, Adults: 18 to 64 years
Modes of administration in validation study: Computer-based

Psychometrics

Number of items: 82
Sample size in validation study: 608
Administration Time (minutes): 18 minutes
Language of validated version: English

Main article reference

Hahn, E.A., Choi, S.W., Griffith, J.W., Yost, K.J., & Baker, D.W. (2011). Health literacy assessment using talking touchscreen technology (Health LiTT): a new item response theory-based measure of health literacy. J Health Commun, 16 Suppl 3:150-62.

Link to article

Corresponding author

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Elizabeth Hahn
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Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, 633 N. St. Clair St., Suite 1900, Chicago, IL, United States of America
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Description

Health LiTT defines health literacy as “the degree to which individuals have the capacity to read and comprehend health-related print material, identify and interpret information presented in graphical format (charts, graphs, tables), and perform arithmetic operations in order to make appropriate health and care decisions” (Yost et al., 2009, p.298) . This definition encompasses an individual’s capacity to process and understand health-related information, and the ability to apply that information in the management of her/his own health. The capacity to obtain information, which is part of previous definitions (Nielsen-Bohlman et al., 2004) is a navigation skill that requires a different measurement tool.

Year Measure first Published: 2011

About This Measure

Categorical scoring: No
Scoring categories: Item response theory T-score (mean=50, SD=10); categories can be created if needed.

About the Validation of this Measure

Country where validated: United States of America
Content validity: Several iterations of internal and external review- English and Spanish Item Development and Translation Advisory Panels (IDTAP) were assembled to provide ongoing input on item content, difficulty and quality
Reliability notes: Total Health LiTT score meets the psychometric standards of 0.90 or higher for individual measurement.
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