Table 3.

Certainty of evidence.

	Superior/inferior	No different
High/moderate certainty evidence	[Intervention] is superior/inferior to [comparison] for [outcome]	[Intervention] is no different to/than [comparison] for [outcome]
Low certainty evidence	[Intervention] may be superior/inferior to [comparison] for [outcome]	[Intervention] may be no different to/than [comparison] for [outcome]
Very low certainty evidence	We don't know if/It is uncertain whether [intervention] is superior/inferior to [comparison] for [outcome] because the certainty of this evidence is very low.