Relative importance of birth size and postnatal growth for women's educational achievement.
BACKGROUND
Child undernutrition, commonly measured by growth failure, is associated with functional disadvantages later in life.


OBJECTIVE
To assess relationships between child growth and women's educational achievement (EA).


METHODS
Women from four ladino Guatemalan villages were measured as children (1969-1977) and again at ages 20-29 years (1996-1999). The anthropometric measurements analyzed were weight, length, and head circumference (HC) at birth and 2 years and height at adulthood. Sample sizes were 120 at birth, 133 at 2 years, and 145 at adulthood; 108 cases had data at all three points.


METHODS
Women's EA was computed based on five educational tests and was categorized into quintiles. Analysis was based on a proportional odds model. Generalized estimating equations were used to account for sibling clustering. Multiple Stage Least Squares analyses were used to assess the relative importance of birth size and of early (birth to age 2 years) and late postnatal growth (2 years to adulthood).


RESULTS
Size at 2 years (HC and length) but no indicator at birth was positively associated with women's EA. Schooling was a strong, positive predictor of women's EA (odds ratio (OR)=13.7, 95% confidence interval (CI) [6.1, 30.6]). Early postnatal growth but not birth size or late postnatal growth was associated with women's EA (OR with 1 standard deviation (S.D.) increment in length=1.5, 95% CI [1.05, 2.2]).


CONCLUSIONS
Growth in length and HC from birth to 2 years of age, but not birth size or growth after 2 years, is an important predictor of women's EA.
Li
Haojie
H
Nutrition and Health Sciences Program, Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA.
DiGirolamo
Ann M
AM
Barnhart
Huiman X
HX
Stein
Aryeh D
AD
Martorell
Reynaldo
R
D000328:Adult; D000375:Aging / Q000502:physiology*; D001724:Birth Weight / Q000502:physiology*; D001827:Body Height / Q000502:physiology*; D004522:Educational Status; D005260:Female; D005500:Follow-Up Studies; D006166:Guatemala; D006801:Humans; D007231:Infant, Newborn / Q000254:growth & development*; D016017:Odds Ratio; D015430:Weight Gain / Q000502:physiology*