Figure 1.

Receiver operating characteristic curves and corresponding areas under the receiver operating characteristic curve for the esophageal cancer prediction models. (A) Internal validation in the China Kadoorie Biobank using data splitting. (B) External validation in the Changzhou cohort. The models included age (age-only model), sex, regional risk level, education, family history of cancer (simple model), smoking, alcohol use, BMI (intermediate model), physical activity, hot tea consumption, and fresh fruit consumption (full model). AUC: area under the receiver operating characteristic curve.