biostudies-literatureWoo HAKorea Health Industry Development Institute69https://www.ebi.ac.uk/biostudies/studies/S-EPMC12840361biostudies-literatureUnknown13(1)<h4>Background/objectives</h4>Children born small-for-gestational-age (SGA) have varying growth patterns and developmental risks. In this study, we aimed to examine the relationship between weight-for-age z-scores (WAZ) at 2 years and neurodevelopmental and obesity outcomes at 6 years in children with SGA.<h4>Methods</h4>We conducted a population-based cohort study using the National Health Insurance Service database of South Korea (N = 39,809). WAZ at 2 years was used to categorize children into four groups: G1 (WAZ < -1.28 [10th percentile], n = 9416), G2 (-1.28 ≤ WAZ < 0 [50th percentile], n = 20,322), G3 (0 ≤ WAZ < 1.04 [85th percentile], n = 8280), and G4 (1.04 ≤ WAZ, n = 1791). Neurodevelopment was assessed using the Korean Developmental Screening Test (K-DST). Overweight and obesityChildren (Basel, Switzerland)Impact of Early Weight Catch-Up on 6-Year Neurodevelopment and Overweight/Obesity in Children Born Small-for-Gestational-Age.PMC12840361HR22C1605Han MYKim SYHan BWoo HALee EHJung HWKim JHHa EfalseImpact of Early Weight Catch-Up on 6-Year Neurodevelopment and Overweight/Obesity in Children Born Small-for-Gestational-Age.<h4>Background/objectives</h4>Children born small-for-gestational-age (SGA) have varying growth patterns and developmental risks. In this study, we aimed to examine the relationship between weight-for-age z-scores (WAZ) at 2 years and neurodevelopmental and obesity outcomes at 6 years in children with SGA.<h4>Methods</h4>We conducted a population-based cohort study using the National Health Insurance Service database of South Korea (N = 39,809). WAZ at 2 years was used to categorize children into four groups: G1 (WAZ < -1.28 [10th percentile], n = 9416), G2 (-1.28 ≤ WAZ < 0 [50th percentile], n = 20,322), G3 (0 ≤ WAZ < 1.04 [85th percentile], n = 8280), and G4 (1.04 ≤ WAZ, n = 1791). Neurodevelopment was assessed using the Korean Developmental Screening Test (K-DST). Overweight and obesity2025-01-01T00:00:00Z2025 Dec2026-06-09T03:16:59.33Z2026-06-09T03:11:38.322ZS-EPMC128403614159707710.3390/children13010069