| BMI | Body mass index |
| NHSPIC | National Health Screening Program for Infants and Children |
| NHIS | National Health Insurance Service |
| ICD-10 | International Classification of Diseases, Tenth Revision |
| IRB | Institutional Review Board |
| SGA | Small for gestational age |
| NICU | Neonatal intensive care unit |
| CIs | Confidence intervals |
| IRs | Incidence rates |
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