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Table 1 Results of net-benefit analysis to select a cut-off value for the obstetric comorbidity index

From: Methodology for sampling women at high maternal risk in administrative data

Cut-off value Sensitivity Specificity Positive predictive value Net benefit per 1000 live births
2 0.52 0.87 0.02 − 185.7
3 0.38 0.96 0.04 −0.17
4 0.16 0.99 0.06 0.63
5 0.16 0.99 0.08 0.33
6 0.03 0.99 0.09 0.12
7 0.01 0.99 0.12 0.05