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Growth of Filipino infants who differ in body proportions at birth
1Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27516-3997.
Insights
Infant birth weight and body proportions significantly impact first-year growth. Low birth weight infants with good proportions tend to stay small, while those with lower Rohre's Index show better catch-up growth.
Area of Science:
- Pediatric Growth and Development
- Human Biology
- Public Health Nutrition
Background:
- Infant growth trajectories are influenced by early life factors.
- Birth weight and body composition are critical indicators of neonatal health.
- Understanding factors affecting infant growth is vital for early intervention strategies.
Purpose of the Study:
- To analyze infant growth patterns during the first 12 months.
- To determine the impact of birth weight and body proportions on infant growth.
- To evaluate the influence of postnatal factors on growth outcomes.
Main Methods:
- Longitudinal study of 2,695 infants in Metropolitan Cebu, Philippines.
- Classification into five groups based on low birth weight (LBW) and Rohre's Index (RI).
- Multivariate analysis considering feeding practices and morbidity.
Main Results:
- Significant differences in growth patterns were observed across the defined groups.
- Birth weight and body proportions at birth are key determinants of attained size.
- Low birth weight infants with adequate proportions remained smaller, while those with low RI exhibited catch-up growth.
Conclusions:
- Early infant size and body composition significantly predict growth throughout the first year.
- Postnatal factors like feeding and health status interact with initial anthropometry to shape growth.
- Targeted nutritional and health interventions may improve growth outcomes for vulnerable infants.
Abstract:
Growth of infants who differ in body proportions at birth was followed during the first 12 months of life. The sample of 2,695 infants from Metropolitan Cebu, in the Central Philippines, was divided into five groups based on a cross tabulation of low-birth-weight(LBW) status (2,500 g or less) with low (<10th percentile), adequate (10th-90th percentile) or high (>90th percentile)Rohre's Index (RI). The groups exhibited significant differences in growth patterns. The importance of these groups, which reflect weight and body proportions of the infant at birth as a determinant of attained size at 2, 6, and 12 months of age, was evaluated by using multivariate techniques which took into consideration other factors known to affect growth. Results show that intergroup differences in growth patterns and attained size occur because of (1) differences in postnatal growth potential represented by weight and body proportions at birth, (2) differences in the important biological inputs that affect postnatal growth (such as feeding practices and morbidity), and (3) differences in the effects of inputs on growth. Infants who are LBW but well proportioned are most likely to remain small during the first year of life, while those with a low RI at birth are more capable of catch-up growth.
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