[Retracted] Tooth Loss and the Incidence of Ischemic Stroke and Transient Ischemic Attack: A Systematic Review and Meta-Analysis

Table 4

Newcastle-ottawa quality assessment scale for case-control studies.

Case-control study	Selection				Comparability	Exposure			Total
	1	2	3	4		1	2	3
Grau et al. (2004)	★	★	☆	★	★★	★	★	☆	7
Leao et al. (2021)	★	★	☆	★	★★	★	☆	★	7
Palm et al. (2014)	☆	★	★	★	★★	★	★	★	8