Birth weight in the Northwest region of Argentina. Comparison with a national reference and an international standard.

Introduction. Size at birth is subject to genetic and environmental influences; altitude is highly influential. Birth weight (BW) is the most widely used indicator to assess size at birth; different standards and references are available.

Spatial distribution and secular trend (1991-2014) of small for gestational age infants born in Jujuy.

Introduction. A fetus that does not reach the expected growth potential in utero is considered small for gestational age (SGA). Such restriction depends on genetic and/or environmental factors, being altitude a very relevant factor.

Proportionality indices, geographic altitude, and gestational age in newborns from Jujuy, Argentina.

Background: There are several different proportionality indices (PRIs) to evaluate size at birth by gestational age (GA). Yet, the explanatory power of alternative PRIs has not been evaluated in highland (HL) populations.

Aim: Evaluate the relative utility of three PRIs, weight to length ratio (W/L), body mass index (BMI), and ponderal index (PI), for assessing nutritional status in newborns (NBs) from highland (HL ≥ 2000 m) and lowland (LL < 2000 m) regions of the Jujuy Province of Argentina.

Prevalence of underweight and small for gestational age in Argentina: Comparison between the INTERGROWTH-21st standard and an Argentine reference.

Introduction: The term “low birth weight” (< 2500 g) encompasses preterm newborns and term newborns small for gestational age (SGA) (< P10). The World Health Organization de nes underweight as a birth weight < P3 of weight/ age. There is no consensus at an international level about which standards and/or references related to birth weight for gestational age (GA) should be used to assess SGA and underweight among preterm newborns.