Nutrition literacy predicts adherence to healthy/unhealthy diet patterns in adults with a nutrition-related chronic condition

To describe the relationship between adherence to distinct dietary patterns and nutrition literacy. We identified distinct dietary patterns using principal covariates regression (PCovR) and principal components analysis (PCA) from the Diet History Questionnaire II. Nutrition literacy was assessed us...

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Bibliographic Details
Published in:Public health nutrition 2019-08, Vol.22 (12), p.2157-2169
Main Authors: Taylor, Matthew K, Sullivan, Debra K, Ellerbeck, Edward F, Gajewski, Byron J, Gibbs, Heather D
Format: Article
Language:English
Subjects:
Adolescent
Adult
Adults
Aged
Aged, 80 and over
Assessment and methodology
Beverages
Body mass
Cancer
Chronic Disease
Chronic illnesses
Clinical trials
Cross-Sectional Studies
Diabetes
Diabetes mellitus
Diet
Diet, Healthy - psychology
Feeding Behavior - psychology
Female
Food
Food intake
Food processing
Grocery stores
Health education
Health Literacy
Humans
Kansas
Low income groups
Male
Meat
Middle Aged
Nutrition
Nutrition Disorders - diet therapy
Nutrition Disorders - psychology
Nutrition education
Nutrition research
Nuts
Oils & fats
Olive oil
Patient Compliance - psychology
Principal Component Analysis
Principal components analysis
Quality
Regression Analysis
Research paper
Researchers
Skills
Studies
Sugar
Supermarkets
Variables
Variance analysis
Young Adult
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Summary:To describe the relationship between adherence to distinct dietary patterns and nutrition literacy. We identified distinct dietary patterns using principal covariates regression (PCovR) and principal components analysis (PCA) from the Diet History Questionnaire II. Nutrition literacy was assessed using the Nutrition Literacy Assessment Instrument (NLit). Cross-sectional relationships between dietary pattern adherence and global and domain-specific NLit scores were tested by multiple linear regression. Mean differences in diet pattern adherence among three predefined nutrition literacy performance categories were tested by ANOVA. Metropolitan Kansas City, USA. Adults (n 386) with at least one of four diet-related diseases. Three diet patterns of interest were derived: a PCovR prudent pattern and PCA-derived Western and Mediterranean patterns. After controlling for age, sex, BMI, race, household income, education level and diabetes status, PCovR prudent pattern adherence positively related to global NLit score (P < 0·001, β = 0·36), indicating more intake of prudent diet foods with improved nutrition literacy. Validating the PCovR findings, PCA Western pattern adherence inversely related to global NLit (P = 0·003, β = -0·13) while PCA Mediterranean pattern positively related to global NLit (P = 0·02, β = 0·12). Using predefined cut points, those with poor nutrition literacy consumed more foods associated with the Western diet (fried foods, sugar-sweetened beverages, red meat, processed foods) while those with good nutrition literacy consumed more foods associated with prudent and Mediterranean diets (vegetables, olive oil, nuts). Nutrition literacy predicted adherence to healthy/unhealthy diet patterns. These findings warrant future research to determine if improving nutrition literacy effectively improves eating patterns.
ISSN:1368-9800
1475-2727
DOI:10.1017/S1368980019001289