Gap finder

Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Population

Intervention or exposure

Comparison

Outcome

Any field or review title

Field or topic

Source

Review versions

1 questions in 1 reviews · cluster CL0074

current versions

No studies 0 · 0%Ungraded 1 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Intervention categories, outcome domains and clusters are a proposed key pending human validation. Clear all filters

Question	Effect	Evidence	Status / GRADE
Daily chewing gum for 2 weeks or longer vs No gum chewing or control Unstimulated whole salivary flow rate · Elderly people and medically compromised people with xerostomia · 2 to 12 weeks, Meta-regression by chewing duration The effect of gum chewing on xerostomia and salivary flow rate in elderly and medically compromised… (2023)	SMD per week 0.06	6 studies · 291 participants	Ungraded