"This is a surprising finding, because the very definition of SGA (≤ 10th percentile) and LGA (≥ 90th percentile) have never been designed to correspond with maternal BMI...[which] suggests that there is a kind of biological maternal–fetal connection," write the authors. They found that...
distinction between AN and AAN was based on operationalization of low weight by BMI and BMI percentile thresholds, which may be more flexibly applied in clinical practice. Thus, some participants may be diagnosed with AN and have a significantly low body weight within the context of their age, ...