Information Horizons Mapping is Related to Other Measures of Health Literacy but Not Information Literacy

Objective - To evaluate information horizons mapping as a valid measure for assessing information literacy and health literacy compared to three validated information and health literacy measurements and level of educational attainment. Design - Quantitative data analysis using multiple regression and the Anker, Reinhart, and Feeley model as the conceptual framework. Setting - A small university-centered community in Iowa City. Subjects - 149 members of the university community. Methods - The author conducted a power analysis to determine a minimum sample size required for maintaining study validity and selected the Anker Model of conceptual framing for health information-seeking behavior. This is a three-phased model that explores the information seeker's predisposing characteristics, engagement in health information seeking, and outcomes associated with information seeking. Recruited participants completed three assessments the Tool for Real-time Assessment of Information Literacy Skills (TRAILS), the Health Literacy Skills Instrument (HLSI), and the Brief Health Literacy Screen (BHLS) and drew information horizon maps illustrating what sources of information they tend to seek for health-related questions. The author calculated information horizon map results using a scoring system incorporating the number and quality of information sources identified in the maps and applied multiple linear regression analysis and Spearman's rank correlation coefficient to participants' scores from all four assessments as well as their level of educational attainment to determine strengths of relationships between variables. Main Results - In the information horizons map results, participants identified an average of 6.9 information sources with a range of 3-13 and received an average score of 18.8 in information source quality with a range of 445. The author applied multiple linear regression to predict the number of information source counts on the information horizons map based on HLSI, TRAILS, and BHLS assessment scores and level of educational attainment and found a significant relationship (p=0.044). A significant relationship also existed between quality of source scores on the map based on HLSI, TRAILS, and BHLS assessment scores and level of educational attainment (p=0.033). Removing the educational attainment variable produced an even stronger significant result. Spearman's rank correlation coefficient supported the findings of the multiple regression analysis and revealed a strong relationship between source count and scores on the BHLS (r=0.87) and HLSI (r=71) but a weak relationship between source counts and TRAILS score and level of educational attainment. Source quality had a weak relationship with BHLS scores (r=0.24), a moderate relationship with the HLSI scores (r=0.50), and a weak relationship with TRAILS scores and educational attainment. Conclusions - The data analysis suggests a significant relationship between information horizons mapping and health literacy but not information literacy or level of educational attainment. This data supports findings from the author's previous research examining the relationship between information horizon maps and information literacy scores for refugee and immigrant women. It also suggests that information horizons mapping may facilitate storytelling that reflects the complexity of participants' health literacy ability and may introduce the potential to assess low-literacy level populations. More research is needed to examine the quality and complexity produced in information horizons maps. This methodology may be applied to investigate better techniques for assessing the health literacy levels among populations that struggle with prose-based assessments.