Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

374 questions · 393 findings · 47 reviews · Headline outcomes only

No studies found 73 · 18.6%GRADE not reported 16 · 4.1%Very low 164 · 41.7%Low 85 · 21.6%Moderate 36 · 9.2%High 19 · 4.8%

Personal protective equipment (PPE) types: powered, air‐purifying respirator (PAPR) plus coverall vs N95 mask plus gown

Any contamination fluorescent marker · healthcare worker volunteers

It is very uncertain whether personal protective equipment (PPE) types: powered, air‐purifying… changes any contamination: fluorescent marker compared with N95 mask plus gown (very low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): sealed gown‐glove interface vs standard gown

Contamination: fluorescent lotion · healthcare workers

It is very uncertain whether modified personal protective equipment (PPE): sealed gown‐glove… changes contamination: fluorescent lotion compared with standard gown (very low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): sealed gown‐glove interface vs standard gown

Contamination: MS2 · healthcare workers

It is very uncertain whether modified personal protective equipment (PPE): sealed gown‐glove… changes contamination: MS2 compared with standard gown (very low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): gown ‐ easy to doff vs standard gown

Any contamination fluorescent marker · healthcare workers

Modified personal protective equipment (PPE): gown ‐ easy to doff may leads to lower contamination: fluorescent marker compared with standard gown (low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): gown ‐ easy to doff vs standard gown

Contamination: bacteriophage · healthcare workers

Modified personal protective equipment (PPE): gown ‐ easy to doff may leads to lower contamination: bacteriophage compared with standard gown (low certainty).

1 finding from 1 review

Personal protective equipment (PPE) types: powered, air‐purifying respirator (PAPR) plus coverall vs N95 mask plus gown

Compliance with guidance ‐ Noncompliance with donning guidance · healthcare worker volunteers

It is very uncertain whether personal protective equipment (PPE) types: powered, air‐purifying… changes compliance: noncompliance with donning guidance compared with N95 mask plus gown (very low certainty).

1 finding from 1 review