Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,024 questions · 3,338 findings · 330 reviews

No studies found 735 · 22%GRADE not reported 282 · 8.4%Very low 962 · 28.8%Low 870 · 26.1%Moderate 384 · 11.5%High 105 · 3.1%

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

Tailored interventions based on sputum eosinophils vs tailored interventions based on clinical symptoms

Exacerbations · people with asthma

Tailored interventions based on sputum eosinophils probably leads to lower number of participants who had one or more exacerbations over the… compared with tailored interventions based on clinical symptoms (moderate certainty).

1 finding from 1 review

Tailored interventions based on sputum eosinophils vs tailored interventions based on clinical symptoms

Hospital admissions · people with asthma

Tailored interventions based on sputum eosinophils probably leads to lower hospitalisations compared with tailored interventions based on clinical symptoms (moderate certainty).

1 finding from 1 review

Nutrition education intervention for pregnant women vs no intervention or standard care to reduce stunting (height‐for‐age, length at 18 months)

Low birth weight (g) · pregnant women

Nutrition education intervention for pregnant women may leads to higher low birth weight (g) compared with standard care or no intervention, to reduce stunting (low certainty).

1 finding from 1 review