Reading the nutritional information on food labels among teachers with and without hypertension in Brazil

Background: To examine the associations among nutritional label use, medically diagnosed hypertension, and sociodemographic factors among teachers. Methods: A cross-sectional study of elementary and secondary school teachers in Londrina, Paraná, Brazil, was conducted. Data regarding sociodemographic variables, hypertension diagnosis, and the reading of nutritional information on food/beverage labels were collected in 2012–2013. Associations were analyzed using Chi-square test or Fisher's exact test, and multivariate binary logistic regression models were used to adjust for possible confounders; odds ratios (ORs), 95% confidence intervals (CIs), and adjusted P values were calculated. Results: Of the 978 teachers interviewed, 15% were diagnosed with hypertension, and 62.5% read nutritional information in the 12 months prior to the survey (41% frequently or always). No differences were found between teachers with and without hypertension with regard to frequent reading (frequently/always) of nutritional labels. The frequent use of nutritional labels was significantly associated with female sex (OR = 1.39; 95% CI = 1.04–1.85) and the highest monthly family income level (OR = 1.82; 95% CI = 1.07–3.11). Teachers with hypertension reported checking for sodium more frequently than those without (adjusted P value = 0.040). Medical advice (adjusted P value