Table 1.

UC recognition results.

	Number of UCs recognized	TP	FP	FN	Sensitivity (%)	PPV (%)
Maternal perception	451	N/A	N/A	N/A	N/A	N/A
EHG	425	396	29	55	87.80	93.18
TOCO	417	379	38	72	84.04	90.89

N/A: not available.