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Linear growth trajectories in Zimbabwean infants
Ethan K Gough1, Erica Em Moodie1, Andrew J Prendergast2,3
1Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada.
The American Journal of Clinical Nutrition
|November 4, 2016
Summary
Early life stunting impacts child development globally. This study identified four growth patterns in Zimbabwean infants, with maternal and infant factors influencing growth restriction severity by birth.
Area of Science:
- Pediatrics
- Global Health
- Nutritional Science
Background:
- Undernutrition causes 45% of global child deaths and stunting has lasting developmental impacts.
- Linear growth deficits in the first 1000 days of life are critical for infant development.
- Understanding growth patterns is key for effective infant nutritional interventions.
Purpose of the Study:
- To determine linear growth trajectories from birth to 24 months in Zimbabwean infants.
- To identify factors influencing these growth patterns.
Main Methods:
- Secondary analysis of longitudinal data from 3338 HIV-unexposed infants.
- K-means clustering identified distinct linear growth trajectories.
- Multinomial logistic regression analyzed associated covariates.
Main Results:
- All infants showed growth restriction, with mean length-for-age z-score declining from -0.6 to -1.4.
- Four distinct growth patterns emerged, varying in timing and severity of growth faltering.
- Maternal height/education and infant birth weight/length were linked to less growth restriction; male sex to more restriction.
Conclusions:
- Maternal and infant characteristics at birth significantly influence linear growth restriction magnitude.
- Key determinants of growth faltering appear established early in life.
- Targeted interventions considering these factors may improve infant growth outcomes.
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