Catch-up growth and growth deficits: Nine-year annual panel child growth for native Amazonians in Bolivia

TitleCatch-up growth and growth deficits: Nine-year annual panel child growth for native Amazonians in Bolivia
Publication TypeJournal Article
Year of Publication2016
AuthorsZhang, Rebecca, Eduardo A. Undurraga, Wu Zeng, Victoria Reyes-García, Susan Tanner, William R. Leonard, Jere R. Behrman, and Ricardo A. Godoy
JournalAnnals of Human Biology
Volume43
Pagination304-315
ISBN Number0301-4460
Accession NumberPMID: 27251215
AbstractBackground: Childhood growth stunting is negatively associated with cognitive and health outcomes, and is claimed to be irreversible after age 2.Aim: To estimate growth rates for children aged 2?7 who were stunted (sex-age standardised z-score [HAZ] <?2), marginally-stunted (?2 ≤ HAZ ≤?1) or not-stunted (HAZ >?1) at baseline and tracked annually until age 11; frequency of movement among height categories; and variation in height predicted by early childhood height.Subjects and methods: This study used a 9-year annual panel (2002?2010) from a native Amazonian society of horticulturalists?foragers (Tsimane?; n?=?174 girls; 179 boys at baseline). Descriptive statistics and random-effect regressions were used.Results: This study found some evidence of catch-up growth in HAZ, but persistent height deficits. Children stunted at baseline improved 1 HAZ unit by age 11 and had higher annual growth rates than non-stunted children. Marginally-stunted boys had a 0.1 HAZ units higher annual growth rate than non-stunted boys. Despite some catch up, ? 80% of marginally-stunted children at baseline remained marginally-stunted by age 11. The height deficit increased from age 2 to 11. Modest year-to-year movement was found between height categories.Conclusions: The prevalence of growth faltering among the Tsimane? has declined, but hurdles still substantially lock children into height categories.
URLhttp://dx.doi.org/10.1080/03014460.2016.1197312