This analysis reveals the misclassification of preterm infants' growth using weight-for-age criteria, suggesting a need for better metrics.
The use of ≤10%ile for weight-for-age as a cut-off to identify growth concerns at 36 weeks postmenstrual age misclassified many preterm infants compared to malnutrition categories using z-scores.
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Rickman et al. (2026) studied this question.
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