Table 1. Criteria to rank predatory journals .

Criteria Group	Criteria	metric	weight
Editorial section	Email of editor	Official email	0
		General email service	1
		Not available	2
	Affiliation of editors	Full affiliation	0
		Only country name	1
		Not available	2
		Editors are from certain country	2
	Number of editors	Lower than 5	2
		Between 5-7	1
		More than 7	0
Review process and publishing	Review time	Lower than a week	2
		Lower than a month	1
		More than a month	0
	Unclear review process	Yes	1
		No	0
	No. of paper in each issue	Lower than 20 papers	0
		More than 20 paper	1
	Questionable special issue	Yes	1
		No	0
announcement	Availability of journal full address	Yes	0
		No	1
	Using bogus metric and index	Yes	1
		No	0
	Send journal spam email to receive papers	Yes	1
		No	0
OA policies and publication charges	Fast track fee	Yes	1
		No	0
	Submission fee	Yes	1
		No	0
	Publication Fee	Yes	1
		No	0
	Charging both authors and readers	Yes	1
		No	0