Dietary diversities score and anthropometric characteristics in Iranian elementary school children

Dietary diversity scoring is a good method to assess quality of individual's diet. The study aimed to investigate the association between dietary diversity and body mass index among elementary school students in the south of Tehran, Iran. This cross-sectional study was conducted on elementary school students, age range of 7-12 years old, in 2015. Data were collected using a personal information questionnaire and three 24-h recall questionnaires. Dietary diversity score was calculated from the number of food groups in these questionnaires. A total of 536 students, 258 (48.1%) female and 278 (51.9%) male, were recruited in the study. The mean age of the students was 9.43 ± 1.73 years. Seafood consumption was more frequent and beans was lower frequent in students at higher BMI (≥95th percentile) than the other children (34% vs 25% and 71% vs 83%, respectively, p<0.05). However, the statistical analysis failed to find significant relationships between children's body mass index (BMI) with consumption of diary, vegetable, fruits, protein, fat, and junk food intake. The association between children's BMI with seafood and beans consumption confirmed in multivariate analysis (OR= 1.50 and 0.52, respectively, p<0.05). The study finding showed that seafood and beans consumption may influence on elementary student BMI.