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Dietary Habits Are Associated With School Performance in Adolescents.

ABSTRACT: Several studies suggest that dietary habits are associated with poor academic performance. However, few studies have evaluated these relations after adjusting for numerous confounding factors. This study evaluated the frequency of various diet items (fruit, soft drinks, fast foods, instant noodles, confections, vegetables, and milk) and the regularity of meal times (breakfast, lunch, and dinner) all at once.A total of 359,264 participants aged from 12 to 18 years old were pooled from the Korea Youth Risk Behavior Web-based Survey (KYRBWS) for the 2009 to 2013 period. Dietary habits over the last 7 days were surveyed, including the regularity of consuming breakfast, lunch and dinner and the frequency of eating fruits, soft drinks, fast foods, instant noodles, confections, vegetables, and milk. Physical activity, obesity, region of residence, subjective assessment of health, stress level, economic level, and parental education level were collected from all of the study participants. School performance was classified into 5 levels. The adjusted odds ratios (AORs) of dietary habits for school performance were analyzed using multinomial logistic regression analyses with complex sampling. Structural equation modeling was used to analyze the effects of diet factors on school performance while considering the effects of other variables on both diet factors and school performance.Frequent intakes of breakfast (AOR?=?2.34, 95% confidence interval [CI]?=?2.20-2.48), fruits (AOR?=?1.73, 95% CI?=?1.62-1.86), vegetables (AOR?=?1.48, 95% CI?=?1.37-1.61), and milk (AOR?=?1.35, 95% CI?=?1.28-1.43) were related to high levels of school performance (each with P?

SUBMITTER: Kim SY

PROVIDER: S-EPMC4998375 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Dietary Habits Are Associated With School Performance in Adolescents.

Kim So Young SY Sim Songyong S Park Bumjung B Kong Il Gyu IG Kim Jin-Hwan JH Choi Hyo Geun HG

Medicine 20160301 12

Several studies suggest that dietary habits are associated with poor academic performance. However, few studies have evaluated these relations after adjusting for numerous confounding factors. This study evaluated the frequency of various diet items (fruit, soft drinks, fast foods, instant noodles, confections, vegetables, and milk) and the regularity of meal times (breakfast, lunch, and dinner) all at once.A total of 359,264 participants aged from 12 to 18 years old were pooled from the Korea Y ...[more]

PMID: 27015180

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Project description:INTRODUCTION:The importance of healthy eating in adolescence is well established. The present study examined possible effects of the free Norwegian School Fruit Scheme (NSFS), changes in dietary habits between 1995 and 2008, and whether secular changes in dietary habits differed among schools who implemented the NSFS during September 2007. METHOD:We used data from the Young-HUNT1 survey conducted from 1995 to 1997 and the Young-HUNT3 survey conducted from 2006 to 2008, which are part of the Nord-Trøndelag Health Study (HUNT), a longitudinal population health study. To evaluate the NSFS, the date Young-HUNT3 participants answered the questionnaire was used to identify affiliation to the intervention group (post-September 2007, n?=?1892) or control group (pre-September 2007, n?=?2855). To explore dietary habits over time, adolescents attending the same schools in Young-HUNT1 (n?=?4137) and Young-HUNT3 (n?=?4113) were included. Further, we investigated secular changes in dietary habits according to school type (intervention schools vs control schools). In all analysis, we explored possible differential effects according to socioeconomic status (SES) and gender. A questionnaire measured adolescents' consumption of fruit, vegetables, candy, potato chips, sugar-sweetened beverages (SSB) and artificially sweetened beverages (ASB). Educational intention was used as a proxy for SES. Multilevel logistic regression was used. RESULTS:Within Young-HUNT3, the intervention group showed increased odds of daily consumption of fruit (aOR 1.7, 95% CI?=?1.3-2.4) compared to the control group. Over time, adolescents were more likely to consume fruit (aOR?=?1.48, 95% CI?=?1.28-1.71), vegetables (OR?=?1.41, 95% CI?=?1.28-1.53), potato chips (aOR?=?1.60, 95% CI?=?1.26-2.04) and SSB (OR?=?2.02, 95% CI?=?1.66-2.45). Secular changes for fruit differed by school type: adolescents in intervention schools had higher odds of daily consumption (aOR?=?1.82, 95% CI?=?1.38-2.38) than those in control schools (aOR 1.26, 95% CI?=?1.07-1.47). CONCLUSION:The results indicated that the NSFS increased adolescents' fruit consumption. In the period assessed, the study identified positive and negative changes in adolescents' dietary habits.

Project description:Several studies have reported negative relations between allergic diseases and school performance but have not simultaneously considered various allergic diseases, including allergic rhinitis, asthma, and atopic dermatitis, and only examined a limited number of participants. The present study investigated the associations of allergic rhinitis, asthma, and atopic dermatitis with school performance in a large, representative Korean adolescent population. A total of 299,695 7th through 12th grade students participated in the Korea Youth Risk Behaviour Web-based Survey (KYRBWS) from 2009 to 2013. The subjects' history of allergic rhinitis, asthma, and atopic dermatitis and number of school absences due to these diseases in the previous 12 months were examined and compared. School performance was classified into 5 levels. The relations between allergic disorders and school performance were analyzed using multiple logistic regressions with complex sampling and adjusted for the subjects' durations of sleep, days of physical activity, body mass indexes (BMIs), regions of residence, economic levels, parents' education levels, stress levels, smoking status, and alcohol use. A subgroup analysis of the economic groups was performed. Allergic rhinitis was positively correlated with better school performance in a dose-dependent manner (adjusted odds ratios, AOR, [95% confidence interval, CI] = 1.50 [1.43-1.56 > 1.33 [1.28-1.38] > 1.17 [1.13-1.22] > 1.09 [1.05-1.14] for grades A > B > C > D; P < 0.001). Asthma was negatively correlated with better school performance (AOR [95% CI] = 0.74 [0.66-0.83], 0.87 [0.79-0.96], 0.83 [0.75-0.91], 0.93 [0.85-1.02] for performance A, B, C, and D, respectively; P < 0.001). Atopic dermatitis was not significantly correlated with school performance. The subgroup analysis of the students' economic levels revealed associations between allergic diseases and school performance. Compared to other allergic disorders, the asthma group had more school absences due to their symptoms (P < 0.001). School performance was positively correlated with allergic rhinitis and negatively correlated with asthma in Korean adolescents, even after adjusting for other variables. The asthma group had an increased number of school absence days, which presumably contributes to these students' poor school performance.

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Dietary Habits Are Associated With School Performance in Adolescents.

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Dietary Habits Are Associated With School Performance in Adolescents.

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