Table 3.

Cut-off Points Analysis of CFR Values to Determine Severe Abruptio Placenta

	Cut Point	AUC	p	Sensitivity 95% CI	Specificity 95% CI	PPV 95% CI	NPV 95% CI
CFR	0.1381	0.730	< 0.001	64.7 (50.1–77.6)	76.6 (67.5–84.3)	56.9 (47.0–66.3)	82.0 (75.6–87.0)

Abbreviations: AUC, area under curve; CFR, creatinine–fibrinogen ratio; PPV, Positive predictive value; NPV, Negative predictive value.