Growth chart

Gestational age

Obstetrics

Birth weight

Environmental health

Fetus

Small for gestational age

Population

Biology

Singleton

Intrauterine growth restriction

Gestation

Internal medicine

Pediatrics

Gestational diabetes

Medical record

Advanced maternal age

Pregnancy

Genetics

Medicine

American Journal of Obstetrics and Gynecology

Antenatal detection of intrauterine growth restriction remains a major obstetrical challenge, with the majority of cases not detected before birth. In these infants with undetected intrauterine growth restriction, the diagnosis must be made after birth. Clinicians use birthweight charts to identify infants as small-for-gestational-age if their birthweights are below a predefined threshold for gestational age. The choice of birthweight chart strongly affects the classification of small-for-gestational-age infants and has an impact on both research findings and clinical practice.

From population reference to national standard: new and improved birthweight charts