Evaluation of the Acceleration and Deceleration Phase-Rectified Slope to Detect and Improve IUGR Clinical Management

Table 3

ROC analysis to communicate the diagnostic performance of the cCTG parameters before 34 weeks.

	Cut-off		Sensitivity		Specificity		AUC		Confidence interval (95%)
	Healthy	IUGR	Healthy	IUGR	Healthy	IUGR	Healthy	IUGR	Healthy	IUGR
Time parameters
STV (ms)	4,25	4,14	0,88	0,91	0,31	0,87	0,377	0,914	0,26–0,49	0,85–0,98
LTI (ms)	23,33	16,69	0,75	0,64	0,55	0,98	0,645	0,861	0,47–0,82	0,76–0,96
Nonlinear parameters
ApEn	1,41	1,15	0,44	0,38	0,83	0,92	0,591	0,638	0,39–0,79	0,51–0,77
LZC	1,03	1,03	0,78	0,92	0,68	0,44	0,709	0,703	0,50–0,92	0,60–0,81
SampEn	1,41	1,07	0,44	0,54	0,84	0,81	0,584	0,666	0,38–0,79	0,53–0,80
PRSA parameters
APRS (bpm)	0,18	0,11	0,67	0,75	0,76	0,91	0,724	0,865	0,57–0,88	0,77–0,96
DPRS (bpm)	−0,16	−0,11	0,78	0,79	0,63	0,91	0,709	0,900	0,57–0,85	0,83–0,97

Cut-off was obtained with the Youden test.