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%

Modified personal protective equipment (PPE): gown with gown‐glove improvement vs standard gown and gloves

People with contamination · healthcare workers

Modified personal protective equipment (PPE): gown with gown‐glove… may leads to lower people with contamination compared with standard gown and gloves (low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): gloves with tab vs standard gloves

Any contamination of hands · healthcare workers

It is very uncertain whether modified personal protective equipment (PPE): gloves with tab changes any contamination of hands compared with standard gloves (very low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): mask plus tabs vs standard masks

Contamination of mask from hands · healthcare workers

It is very uncertain whether modified personal protective equipment (PPE): mask plus tabs changes contamination of mask from hands compared with standard masks (very low certainty).

1 finding from 1 review

Modified personal protective equipment (PPE): mask plus tabs vs standard masks

Contamination of head from hands · healthcare workers

It is very uncertain whether modified personal protective equipment (PPE): mask plus tabs changes contamination of head from hands compared with standard masks (very low certainty).

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Contamination: virus detected ‐ All body parts · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes contamination: virus detected ‐ all body parts compared with doffing with single gloves (very low certainty).

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Contamination: virus detected ‐ face · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes contamination: virus detected ‐ face compared with doffing with single gloves (very 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 doffing guidance · healthcare worker volunteers

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

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Contamination: virus detected ‐ shirt · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes contamination: virus detected ‐ shirt compared with doffing with single gloves (very low certainty).

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Contamination: virus detected ‐ pants · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes contamination: virus detected ‐ pants compared with doffing with single gloves (very low certainty).

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Compliance with guidance ‐ Noncompliance: any error · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes non‐compliance: any error compared with doffing with single gloves (very low certainty).

1 finding from 1 review

Procedures: doffing with double gloves vs doffing with single gloves

Contamination with fluorescent · healthcare workers

It is very uncertain whether procedures: doffing with double gloves changes contamination with fluorescent compared with doffing with single gloves (very low certainty).

1 finding from 1 review

Procedures: donning and doffing with instructions vs No special instructions (control)

People with one or more errors · healthcare workers

It is very uncertain whether procedures: donning and doffing with instructions changes people with one or more errors compared with without instruction (very low certainty).

1 finding from 1 review

Procedures: doffing with extra sanitation of gloves vs standard no sanitation

Bacterial contamination: alcohol‐based hand rub · healthcare workers

Procedures: doffing with extra sanitation of gloves showed no clear difference in bacterial contamination: alcohol‐based hand rub compared with standard no sanitation (low certainty).

1 finding from 1 review