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The effects of the WIC program on the growth of infants
Insights
The Special Supplemental Food Program for Women, Infants and Children (WIC) improved infant growth rates. WIC participation positively impacted children
Area of Science:
- Nutrition Science
- Pediatric Health
- Public Health Interventions
Background:
- The Special Supplemental Food Program for Women, Infants and Children (WIC) offers food and nutrition support to at-risk populations.
- Assessing the impact of WIC on infant growth is crucial for public health program evaluation.
Purpose of the Study:
- To evaluate the effect of WIC participation on infant growth trajectories.
- To determine if WIC program enrollment influences anthropometric measurements in infants.
Main Methods:
- Utilized retrospective longitudinal anthropometric data from 906 WIC and 1001 non-WIC infants (birth to 18 months).
- Developed a novel methodology to account for regression to the mean and expected growth in longitudinal studies.
- Employed regression analyses to assess growth rates in relation to WIC participation.
Main Results:
- Infants participating in WIC between 6 and 18 months showed greater than expected growth rates.
- The most significant WIC program effect on growth was observed at 6 months of age (average 4 months of participation).
- Routine WIC program data proved suitable for program evaluation.
Conclusions:
- WIC participation is associated with enhanced infant growth.
- The study demonstrates the effectiveness of WIC in promoting healthy development in young children.
- Longitudinal data collected within WIC can be leveraged for ongoing program assessment and improvement.
Abstract:
The Special Supplemental Food Program for Women, Infants and Children (WIC) provides food supplements and nutrition counseling to pregnant and lactating women and children up to age 5 who are at nutritional risk. The purpose of this study was to determine the effects of the program on the growth of infants. Retrospective longitudinal anthropometric data were obtained on 906 WIC and 1001 non-WIC infants from birth to 18 months of age. A new methodology was developed that addressed two factors in longitudinal studies frequently confounded with program impact: 1) regression to the mean and 2) expected growth. Regression analyses indicated that children who were on WIC between 6 and 18 months of age were growing at greater than expected rates. The most persistent program effect was at 6 months of age, after the children had been on the program for an average of 4 months. The study indicated that data routinely collected by the program can be used for evaluation purposes.