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Dietary diversity status and influencing factors among children aged 3-7 in China
Bingbing Guo1, Lan Jiang1, Xinye Jiang1
1Wuxi Maternity and Child Health Hospital, Affiliated Women's Hospital of Jiangnan University, Wuxi, Jiangsu, China.
Insights
Over one-third of Wuxi preschool children exhibit low dietary diversity. Factors like increased screen time and maternal overweight/obesity are linked to poor dietary diversity, necessitating targeted interventions.
Area of Science:
- Nutrition Science
- Public Health
- Pediatrics
Background:
- Dietary diversity is crucial for preschool children's growth and development.
- Low dietary diversity is a growing concern in urban populations, impacting child health outcomes.
- Understanding influencing factors is key to developing effective public health strategies.
Purpose of the Study:
- To assess the dietary diversity status of preschool children (3-7 years) in Wuxi City.
- To identify factors associated with dietary diversity in this population.
- To provide evidence for targeted interventions to improve children's nutrition.
Main Methods:
- A stratified cluster random sampling method included 3,727 preschool children from 18 kindergartens in Wuxi.
- Questionnaires collected data on child demographics, dietary habits, family conditions, and parental factors.
- Multivariate logistic regression analyzed associations between various factors and dietary diversity scores.
Main Results:
- The average dietary diversity score (DDS) was 5.07 ± 1.94, with 36.79% of children showing low dietary diversity (DDS ≤ 4).
- Factors associated with low dietary diversity included prolonged daily screen time (>1 hour) and maternal overweight/obesity (BMI ≥ 24).
- Positive associations with normal dietary diversity were observed with specific income levels, outdoor activity durations, sleep duration, appetite, and fixed dining seats.
Conclusions:
- A significant proportion of Wuxi's preschool children suffer from low dietary diversity, warranting immediate attention.
- Elevated screen time and maternal overweight/obesity are significant risk factors for low dietary diversity.
- Targeted interventions focusing on screen time, maternal health, family environment, and government support are recommended, with stratified approaches for vulnerable groups.
Objective:
To investigate the dietary diversity status of preschool children aged 3-7 years in Wuxi City, analyze the factors influencing dietary diversity, and provide a scientific basis for developing effective intervention methods to improve dietary diversity.
Methods:
A stratified cluster random sampling method was used to select 3,727 preschool children from 18 kindergartens across Wuxi. A questionnaire was used to collect demographic data of the children and their parents, dietary habits, and family conditions.
Results:
The average dietary diversity score (DDS) was 5.07 ± 1.94, with 36.79% of children having low dietary diversity (DDS ≤ 4). Multivariate logistic regression analysis indicated that the following factors were associated with normal dietary diversity: family per capita monthly income of 1,000-2,000 RMB, children engaging in outdoor activities for less than 2 h daily or more than 2 h daily, an average daily sleep duration of 9-13 h, occasional good appetite, sometimes good appetite, often good appetite, always good appetite, and having a fixed dining seat. Conversely, factors associated with low dietary diversity included maternal BMI of 24-27.9 (OR = 0.725, 95%CI: 0.539 ~ 0.975, p = 0.034), maternal BMI > 28 (OR = 0.649, 95%CI: 0.483 ~ 0.872, p = 0.004), and daily screen time of >1 h (OR = 0.700, 95%CI: 0.523 ~ 0.935, p = 0.016), 1-2 h (OR = 0.622, 95%CI: 0.459 ~ 0.843, p = 0.002), or >2 h (OR = 0.620, 95%CI: 0.428 ~ 0.900, p = 0.012).
Conclusion:
Over one-third of preschool children in Wuxi have low dietary diversity, which requires greater attention. Screen time was significantly associated with low dietary diversity, Maternal overweight/obesity was significantly associated with lower dietary diversity among children. Particular focus should be placed on children with prolonged screen time and maternal overweight/obesity to prevent diseases related to low dietary diversity. Targeted intervention strategies for Wuxi's preschool children were proposed from the perspectives of family, kindergarten and government, and stratified interventions were suggested for migrant children and children with maternal obesity.
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