Predictive performance of cervical elastography for preterm birth: A head-to-head network meta-analysis

Figure 1 PRISMA flowchart outlining the literature screening process, study selection, and exclusion criteria.

Figure 2 Quality Assessment of Diagnostic Accuracy Studies-2 criteria for the included studies. ¹Distinct independent study from Li et al[20] in 2023 with the same first author surname ‘Li et al[19]’.

Figure 3 Summary receiver operating characteristic curves for preterm birth prediction. Combined model (brown) shows the highest diagnostic accuracy; cervical length (red) is the lowest. Axes represent sensitivity and 1-specificity. SROC: Summary receiver operating characteristic; TPR: True positive rate; FPR: False positive rate; CL: Cervical length; ACA: Anterior cervical angle; ECI: Elasticity contrast index; IOS: Internal os strain; EOS: External os strain; HR: Hardness ratio.