Risk factors and predictive model for hepatitis B virus deoxyribonucleic acid elevation in mid-to-late pregnancy with low viremia

Figure 1 Enrollment flowchart. HBV: Hepatitis B virus; CHB: Chronic hepatitis B.

Figure 2 Multivariate logistic regression analysis of elevated hepatitis B virus DNA in the middle and late stages of pregnancy. OR: Odds ratio; CI: Confidence interval; HBV: Hepatitis B virus; HBeAg: Hepatitis B virus e Antigen; AST: Aspartate Aminotransferase; ALT: Alanine Aminotransferase.

Figure 3 Construction and validation of the predictive nomogram. A: Nomogram for predicting hepatitis B virus DNA elevation in mid-to-late pregnancy; B: Receiver operating characteristic curve of the predictive model; C: Calibration curve of the predictive model; D: Decision curve analysis for the predictive model. Net benefit was plotted against threshold probability, with the “None” curve denoting no intervention and the “All” curve denoting universal intervention. HBV: Hepatitis B virus; ROC: Receiver operating characteristic; AUC: Area under the curve; CI: Confidence interval.