Definitions and measurement of health literacy in health and medicine research: a systematic review

OBJECTIVES: The way health literacy is understood (conceptualised) should be closely linked to how it is measured (operationalised). This study aimed to gain insights into how health literacy is defined and measured in current health literacy research and to examine the relationship between health literacy definitions and instruments. DESIGN: Systematic review in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. DATA SOURCES: The MEDLINE, PsycINFO, ERIC and CINAHL databases were searched for articles published during two randomly selected months (March and October) in 2019. ELIGIBILITY CRITERIA: We included articles with a quantitative design that measured health literacy, were peer-reviewed and original, were published in the English language and included a study population older than 16 years.…