Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,736 questions · 15,265 findings · 1,163 reviews · Headline outcomes only

No studies found 3,871 · 25.4%GRADE not reported 810 · 5.3%Very low 4,242 · 27.8%Low 3,879 · 25.4%Moderate 1,999 · 13.1%High 464 · 3%

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Exercise interventions for smoking cessation vs no exercise

Change in weight (kg) · People who have quit smoking

Exercise interventions for smoking cessation showed no clear difference in mean weight change (kg) at end of treatment compared with no exercise intervention (low certainty).

2 findings from 1 review

Brief intervention vs brief advice, information, or assessment only

Harmful alcohol use · people with hazardous or harmful alcohol consumption
2 findings from 1 review

A combination of individual‐level interventions vs no intervention/wait list/placebo/no stress‐reduction intervention

Stress symptoms ( · healthcare workers
3 findings from 1 review

Educational intervention vs no intervention

Needle stick injuries · healthcare workers

Educational intervention showed no clear difference in needle stick injuries, questionnaires, 6 mo (RCT) compared with no intervention (low certainty).

4 findings from 1 review
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Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Any STH prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in any STH prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Ascaris lumbricoides prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in ascaris lumbricoides prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Trichuris trichiura prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in trichuris trichiura prevalence compared with no WASH intervention (low certainty).

1 finding from 1 review

Water, sanitation, and hygiene (WASH) intervention vs no WASH intervention

Hookworm prevalence · children and adults

Water, sanitation, and hygiene (WASH) intervention showed no clear difference in hookworm prevalence compared with no WASH intervention (moderate certainty).

1 finding from 1 review

Visual interventions vs control

Neglect outcomes: immediate effects · spatial neglect or inattention following stroke and other adult‐acquired non‐progressive brain injury

It is very uncertain whether visual interventions changes neglect outcomes: immediate effects compared with any control (very low certainty).

1 finding from 1 review