Table 4. Summary of indicators from signal and detection theory for precancerous and early cancer stages.

	Cutoff point	95% CI (L, U)	Hit	False Alarm	Miss	Correct Rejection	d′
IM vs LGD/HGD	35.8114	(35.208, 36.415)	30.77%	7.69%	69.23%	92.31%	0.9240
IM vs EC	35.7565	(34.993, 36.520)	58.06%	7.69%	41.94%	92.31%	1.2220
LGD/HGD vs EC	34.2892	(33.344, 35.234)	38.71%	0.00%	61.29%	100.00%	4.0130

Abbreviations: H: healthy control; IM: intestinal metaplasia; LGD: low-grade dysplasia; HGD: high-grade dysplasia; EC: early cancer.