Fig. 3: Logistic regression analysis.

a Using only FIGO score (at a score of 7, sensitivity = 0.12, specificity = 0.88); b using the categorised scores from the eight clinical risk factors that constitute the FIGO score, including data derived from CXR chest staging. Matching the specificity achieved by the FIGO score of 7 (0.88), sensitivity is raised to 0.27; ; c using the categorised scores from the eight clinical risk factors that constitute the FIGO score, including data derived from CT chest staging. Matching the specificity achieved by the FIGO score of 7 (0.88), sensitivity is raised to 0.31. CXR chest X-ray, CT computerised tomography (chest), AUC area under the curve, SE standard error, tStat t statistic.