Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,183 questions · 2,385 findings · 241 reviews

No studies found 558 · 23.4%GRADE not reported 158 · 6.6%Very low 704 · 29.5%Low 618 · 25.9%Moderate 276 · 11.6%High 71 · 3%

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