Test characteristics of a clinical prediction model for predicting ectopic pregnancy*
Risk status
Sensitivity (95% CI)
Specificity (CI)
+LR
−LR
*Abbreviations defined in glossary.
High risk
32% (17 to 49)
95% (92 to 97)
6.1
0.7
Intermediate risk
100% (84 to 100)
28% (23 to 32)
1.4
0.0