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has been cited by the following article:
- TITLE: Identifying At-Risk Subpopulations of Canadians with Limited Health Literacy
- AUTHORS: Takashi Yamashita,A. John Bailer,Douglas A. Noe
JOURNAL NAME: Epidemiology Research International
Sep 16, 2014
- ABSTRACT: Background. Health literacy, the set of skills for locating, understanding, and using health-related information, is associated with various health outcomes through health behaviors and health care service use. While health literacy has great potential for addressing health disparities stemming from the differing educational attainment in diverse populations, knowledge about subpopulations that share the same risk factors is useful. Objective. This study employed a logistic regression tree algorithm to identify subpopulations at risk of limited health literacy in Canadian adults. Design. The nationally representative data were derived from the International Adult Literacy and Skills Survey (n = 20,059). The logistic regression tree algorithm splits the samples into subgroups and fits logistic regressions. Results. Results showed that the subpopulation comprised of individuals 56 years and older, with household income less than $50,000, no participation in adult education programs, and lack of reading activities (i.e., newspaper, books) was at the greatest risk (82%) of limited health literacy. Other identified subgroups were displayed in an easily interpreted tree diagram. Conclusions. Identified subpopulations organized in tree diagrams according to the risk of limited health literacy inform not only intervention programs targeting unique subpopulations but also future health literacy research. 1. Identifying At-Risk Subpopulations of Canadians with Limited Health Literacy Health literacy (HL) describes the set of abilities to locate, understand, and use health-related information to make better health decisions throughout one’s life . Along with rapidly advancing medical/health sciences and changing health care systems, being able to obtain timely health-related information is critical for health maintenance/promotion . Limited HL is prevalent in many adult populations and is directly and indirectly associated with lack of knowledge about health/diseases, miscommunication in healthcare settings, and adverse health behaviors (e.g., infrequent preventive healthcare service use and sedentary lifestyle) and, in turn, poorer health outcome [2–4]. Nearly half of the adult populations in developed nations like the US and Canada have insufficient HL skills [5, 6]. Improving HL is one strategy suggested for addressing health disparities . The Rootman and Ronson HL conceptual model  depicts predictors of HL and theoretical pathways between HL and health. In this model, community-/societal-level (e.g., community development and public policy) and