Effectiveness of Laser Therapy in the Management of Recurrent Aphthous Stomatitis: A Systematic Review

Table 1

Grade scale for quality assessment of randomized controlled trials.

Criterion		Grade
	A	B	C
Randomization	Adequate	Unclear (reported randomization but method not described)	Inadequate (quasirandom method of allocation, such as alternation, date of birth, case record number)
Allocation concealment	Adequate	Unclear (not mentioned)	Clearly inadequate concealment/not used
Blinding	Adequate (double-blind or blinding the outcomes evaluators)	Partly blinded/unclear (single-blind or not mentioned)	Not used (“open-label” or “unmask”)
Loss to follow-up/withdrawal	Adequate reporting (including numbers and causes)	Partly reported	Not reported
Comparability of baseline	Comparable (at least including age)	Unclear	Not comparable