Nutr Res Pract.  2013 Aug;7(4):330-335.

Associations between dietary patterns and screen time among Korean adolescents

• Lee JY
• Jun N
• Baik I

Abstract

Data are limited on the association between dietary patterns and screen time among Korean adolescents. The present study identified dietary patterns of 691 adolescents, aged 13-18 years, who had participated in the Third Korean National Health and Nutrition Examination Survey (KNHANES III) and analyzed their associations with screen time. Screen time was defined as the time spent watching TV, using a computer, or playing video games was calculated as a sum of all these times. Dietary patterns and their factor scores were derived from a food frequency questionnaire using the factor analysis method. To analyze the association between dietary patterns and screen time, we conducted multiple linear regression analysis. We also performed multiple logistic regression analysis to estimate odds ratios (OR) of excessive screen time (2 hours or longer per day) and 95% confidence intervals (CI). We identified 2 dietary patterns labeled "the Korean healthy dietary pattern" and "the Western diet and fast foods pattern". The former included mixed grains, legumes, potatoes, red meat, eggs, fish, dairy products, fruits, vegetables, seaweeds, and mushrooms, whereas the latter included noodles, bread, red meat, poultry, fast foods, snack, and soft drinks. After controlling for potential confounding factors, factor scores for the Korean healthy dietary pattern were inversely associated (P-value for trend < 0.01) and those for the Western diet and fast foods pattern were positively associated with the screen time (P-value for trend < 0.01). Adolescents in the top tertile of the scores for the Korean healthy dietary pattern had a multivariable-adjusted OR [95% CI] of 0.44 (0.25-0.75) for excessive screen time compared with those in the lowest tertile. On the basis of these findings, adolescents who have excessive screen time may need to be encouraged to consume a more healthy diet.

Keyword

Adolescents; dietary patterns; screen time; the Korean national health and nutrition examination survey

MeSH Terms

Adolescent
Agaricales
Aged
Bread
Carbonated Beverages
Edible Grain
Dairy Products
Diet
Eggs
Fabaceae
Fast Foods
Fruit
Humans
Linear Models
Logistic Models
Meat
Nutrition Surveys
Odds Ratio
Ovum
Poultry
Surveys and Questionnaires
Snacks
Solanum tuberosum
Vegetables
Video Games

Figure

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  Fig 1 Odds ratios (OR) and 95% confidence intervals (Cls) for the association between the tertiles of dietary pattern scores and screen time longer than 2 hours. Odds ratios of spending screen time > 2 hrs/day in the association with the tertiles of the dietary pattern scores compared with the first tertile (T1).

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