Table 1.

Indices of image quality assessment

General	2/3 of images rated as poor		1
	2/3 of images rated as mild		2
	2/3 of images rated as good		3
Diagnostic value	A. Whether the epithelial cells were equably stained?	True	2
		False	1
	B. Whether the nuclei of epithelial cells were nonspecifically stained?	True	1
		False	2
	C. Whether the nuclei of epithelial cells were stained as polar?	True	2
		False	1