SUMMARY
Risk factors of growth retardation of low socio- economic level children, São Paulo, Brazil
Aiming to analyze the mild to moderate growth retardation associate factors in children at school age, a case control study was conducted with 153 pairs of seven and eight years old children from public schools of the outskirts of the city. The cases were defined as children with a height for age(H/A) between -1 and -2 Z score, according to NCHS/WHO standards, and matched with a H/A ± 0.5 Z-score children of same age, gender, school, classroom and class time, as controls. The height was measured at school according to WHO roles by trained professionals, and household visits were carried out to obtain environmental and socio-economic data. Initially the data was analyzed by the univariate conditional method and then, the statistically significant variables were included in a model of multivariate logistic regression analysis. As a result, the risk factors remaining at the end of the multivariate analyses, by Odds Ratio and it's 95% Confidence Interval were respectively:- mother's height: for each decrease of one standard deviation the OR increased 1.84(CI:1.35 to 2.49); inadequate feeding pattem: OR=2.12; CI:1.17 to 3.83, very low socio-economic level: OR=9.2; CI:3.35 to 25.13,low birth weight: OR=2.59; CI:1,44 to 4.63 and smoking during pregnancy: OR=l,75; CI:0.98 to 3.12.

These results highlight the environment as a determinant factor for growth performance during the first years of the child's life. Despite this, the significant OR for Mother's height allows the assumption that besides the environment, the parent' s height has to be considered as one of the determinants of height deficit, even for the low socio- economic level.

Key words: Stunting, growth retardation, risk factors.

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