Do Chinese Preschool Children Eat a Sufficiently Diverse Diet? A Cross-Sectional Study in China

Background: This study aimed to comprehensively evaluate dietary diversity and its associated factors in Chinese preschoolers and explore whether the daily food consumption of children with different dietary diversity-associated characteristics met recommended dietary amounts. Methods: A cross-sectional study covering seven cities and two villages was conducted and included 697 preschool children aged 3-7 years old. Dietary diversity score (DDS) and DDS 10 were calculated based on 24-h dietary recall. The food-intake differences among children with different DDS 10 predictors were examined. Results: The mean DDS and DDS 10 in Chinese preschool children were 7.4 +/- 1.5 (ranged from 3 to 9) and 7.0 +/- 3 (ranged from 3 to 9) respectively. Positive predictors of dietary diversity included residing in an urban environment, a higher household expenditure on children's food, and a higher frequency of eating outside. Food-intake differences existed among the predictors. Conclusions: Education and intervention should be strengthened to improve the dietary diversity of preschool children, especially in rural areas. The overall dietary pattern of children requires attention, which means not only increasing dietary diversity but also avoiding an unbalanced diet.