Background: To update the ongoing debate about the use of universal strict vs (local) national intrauterine growth charts, we compared the prevalence of small and large-for-gestational-age (SGA/LGA) infants according to international charts and national growth data.
Methods: We classified singleton births from 33 to 42 weeks of gestation in 2016 and 2019 from Qatar (n = 92431), SGA (birthweight <10th percentile), and LGA (>90th percentile). Using our national data (table 1), we calculated gender and gestational age-specific 10th and 90th percentiles which were used to estimate the proportions SGA/AGA/LGA. These growth data based on the customized chart's methodology were then compared to the international Intergrowth-21st newborn standards and Intergrowth-21st classification.
Results: SGA prevalence using national charts was 9.9% both in males and females. This prevalence was like the average prevalence reported by 15 European countries but significantly different (6.3%) when using the international intergrowth standard. LGA prevalence using national charts was 9.8 and 9.9% in males and females respectively. This prevalence was similar to the average prevalence reported by 15 European countries (10%) but significantly different (14%) when using the international intergrowth standard. (table 2)
|I-LGA||14.0%||14.0%||I= Intergrowth. Q= Qatar data
Interpretation: Using international instead of national charts in Qatar could lead to growth-restricted infants being reclassified as having normal growth, while some normal infants could be reclassified as having excessive growth (LGA).
15 Sep 2022 - 17 Sep 2022