Diet quality of adolescents in rural Sri Lanka based on the Diet Quality Index-International: findings from the 'Integrating Nutrition Promotion and Rural Development' project

Julianne Williams, Nick Townsend, Mike Rayner, Ranil Jayawardena, Prasad Katulanda, Seenithamby Manoharan, Kremlin Wickramasinghe

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Objective The current paper describes methods of evaluating dietary habits of Sri Lankan adolescents based on the Diet Quality Index-International (DQI-I), which has been used in multiple international studies to describe dietary variety, moderation, adequacy and balance. The paper describes the method for calculating DQI-I scores and examines associations between DQI-I scores and dietary intake, and between DQI-I scores and sociodemographic factors.Design The study followed a three-stage cluster randomised sampling method. Dietary intake was collected using a validated FFQ. Estimated micronutrient intakes and number of servings consumed were described according to DQI-I quartiles. DQI-I scores were tabulated according to sociodemographic characteristics. Multilevel modelling was used to examine associations between sociodemographic characteristics and DQI-I scores.Setting Secondary schools in rural Sri Lanka.Participants Adolescents (n 1300) aged 12-18 years attending secondary school in rural Sri Lanka.Results DQI-I scores increased with consumption of fat (% energy), cholesterol (mg/d), energy (kJ/d), protein (% energy), Na (mg), dietary fibre (g), Fe (mg) and Ca (mg), but decreased according to percentage of energy coming from carbohydrates. DQI-I scores were significantly lower among females and students with lower levels of maternal education.Conclusions Policies are needed to increase the availability and affordability of nutrient-rich foods such as fruits, vegetables and high-protein foods, particularly to students from lower socio-economic backgrounds. Significant differences in diet quality according to sex, socio-economic status and district suggest there is potential for targeted interventions that aim to increase access to affordable, nutrient-rich foods among these groups.

Original languageEnglish
Pages (from-to)1735-1744
Number of pages10
JournalPublic Health Nutrition
Volume22
Issue number10
Early online date1 Apr 2019
DOIs
Publication statusPublished - 1 Jul 2019

Keywords

  • Adolescent nutrition
  • Diet quality
  • Low- and middle-income countries
  • Nutrition
  • Nutrition transition
  • Rural

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health

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