Table 1.

General characteristics of included studies

Ref.	Year	Country	Study design	No. of patients	Cytology diagnostic category	Reference standard	LBC type
Chun et al[9]	2019	South Korea	Prospective	338	I/B/A/S/M	Combined	SurePath
Zhou et al[7]	2019	China	Retrospective	514	I/A/S/M/B/N	Combined	SurePath
Yeon et al[10]	2018	South Korea	Prospective	48	I/B/A/S/M	Combined	CellprepPlus
Lee et al[12]	2011	South Korea	Prospective	58	I/B/S/M	Combined	ThinPrep
LeBlanc et al[13]	2010	America	Prospective	50	I/B/A/S/M	Histology	ThinPrep
Qin et al[3]	2014	China	Prospective	72	B/M	Combined	ThinPrep
Hashimoto et al[11]	2017	Japan	Prospective	265	M/S/B	Combined	SurePath
Itonaga et al[8]	2019	Japan	Retrospective	311	B/M	Combined	ThinPrep

I: Inadequate; B: Benign; A: Atypical; S: Suspicious; M: Malignant; N: Neoplastic; LBC: Liquid-based cytology.