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Open Access Research article

Lower health literacy predicts smoking relapse among racially/ethnically diverse smokers with low socioeconomic status

Diana W Stewart1*, Miguel Ángel Cano1, Virmarie Correa-Fernández1, Claire Adams Spears2, Yisheng Li3, Andrew J Waters4, David W Wetter15 and Jennifer Irvin Vidrine1

Author Affiliations

1 The Department of Health Disparities Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA

2 The Department of Psychology, The Catholic University of America, Washington, DC, USA

3 The Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA

4 The Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA

5 The Department of Psychology, Rice University, Houston, TX, USA

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BMC Public Health 2014, 14:716  doi:10.1186/1471-2458-14-716

Published: 14 July 2014

Abstract

Background

Nearly half of U.S. adults have difficulties with health literacy (HL), which is defined as the ability to adequately obtain, process, and understand basic health information. Lower HL is associated with negative health behaviors and poor health outcomes. Racial/ethnic minorities and those with low socioeconomic status (SES) are disproportionately affected by poor HL. They also have higher smoking prevalence and more difficulty quitting smoking. Thus, lower HL may be uniquely associated with poorer cessation outcomes in this population.

Methods

This study investigated the association between HL and smoking cessation outcomes among 200, low-SES, racially/ethnically diverse smokers enrolled in smoking cessation treatment. Logistic regression analyses adjusted for demographics (i.e., age, gender, race/ethnicity, relationship status), SES-related characteristics (i.e., education, income), and nicotine dependence were conducted to investigate associations between HL and smoking relapse at the end of treatment (3 weeks post quit day).

Results

Results indicated that smokers with lower HL (score of < 64.5 on the Rapid Estimate of Adult Literacy in Medicine [REALM]) were significantly more likely than those with higher HL (score of ≥ 64.5 on the REALM) to relapse by the end of treatment, even after controlling for established predictors of cessation including demographics, SES, and nicotine dependence (OR = 3.26; 95% CI = 1.14, 9.26).

Conclusions

Findings suggest that lower HL may serve as an independent risk factor for smoking relapse among low-SES, racially/ethnically diverse smokers enrolled in treatment. Future research is needed to investigate longitudinal relations between HL and cessation outcomes and potential mechanisms of this relationship.

Keywords:
Health literacy; Smoking cessation; Health disparities