Table 2.

Assessment of Risk-of-Bias of the Studies Included in the Systematic Review of the Effects of Oxalates on Dentin Hypersensitivity

		First Author, Year of Publication
Domain		Pamir 2007	Gillam 2004	Pillon 2004	Camps 2003	Pereira 2001	Morris 1999	Gillam 1997	Holborow 1994	Cuenin 1991	Cooley 1989	Muzzin 1989	Hansson 1987
Sequence generation	Assignment really random	Yes	Yes	Yes	No	No	Unclear	Unclear	Unclear	No	Unclear	Yes	No
Allocation concealment	Allocation concealed	Yes	Yes	Yes	No	No	Unclear	No	No	Yes	No	Yes	No
Blinding of participants, care providers, and outcome assessors	Patient blinded	Yes	Yes	Yes	Yes	Yes	Unclear	No	Yes	Yes	Yes	Yes	Yes
	Care provider blinded	No	Yes	Yes	No	No	No	No	Unclear	Yes	No	Yes	Yes
	Outcome assessor blinded	Yes	Yes	Yes	Yes	No	No	Yes	Unclear	Yes	No	Yes	Yes
Incomplete outcome data	Point estimate and measure of variability presented	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes	No	Yes	Yes
	Intention-to-treat analysis	NA	Unclear	NA	NA	No	Unclear	NA	Unclear	NA	Unclear	NA	NA
Selective outcome reporting	Free of selective outcome reporting	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Unclear	Yes	Yes	Yes
Other sources of bias	Eligibility criteria specified	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes
	Groups similar at baseline	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No
	Split-mouth (crossover design) appropriate	NA	Unclear	Yes	No	Yes	No	No	No	NA	Yes	Yes	NA

NA, not applicable.