Fig. 1
From: Study of severe early childhood caries in children under general anesthesia from a single hospital
Patient screening flowchart. Initial cases identified from hospital medical records: n = 18,279; excluded cases: age > 6 years, non-S-ECC diagnosis, duplicate medical records, incomplete critical data (e.g., age, gender), and patients with unstable systemic conditions; final included cases: n = 2,357.
