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Comparison 1 Case control studies, Outcome 1 Thorough disinfection of living quarters.
Figures and Tables -
Analysis 1.1

Comparison 1 Case control studies, Outcome 1 Thorough disinfection of living quarters.

Comparison 1 Case control studies, Outcome 2 Frequent handwashing.
Figures and Tables -
Analysis 1.2

Comparison 1 Case control studies, Outcome 2 Frequent handwashing.

Comparison 1 Case control studies, Outcome 3 Wearing mask.
Figures and Tables -
Analysis 1.3

Comparison 1 Case control studies, Outcome 3 Wearing mask.

Comparison 1 Case control studies, Outcome 4 Wearing N95 mask.
Figures and Tables -
Analysis 1.4

Comparison 1 Case control studies, Outcome 4 Wearing N95 mask.

Comparison 1 Case control studies, Outcome 5 Wearing gloves.
Figures and Tables -
Analysis 1.5

Comparison 1 Case control studies, Outcome 5 Wearing gloves.

Comparison 1 Case control studies, Outcome 6 Wearing gowns.
Figures and Tables -
Analysis 1.6

Comparison 1 Case control studies, Outcome 6 Wearing gowns.

Comparison 1 Case control studies, Outcome 7 All interventions.
Figures and Tables -
Analysis 1.7

Comparison 1 Case control studies, Outcome 7 All interventions.

Comparison 1. Case control studies

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Thorough disinfection of living quarters Show forest plot

1

990

Odds Ratio (M‐H, Fixed, 95% CI)

0.30 [0.23, 0.39]

2 Frequent handwashing Show forest plot

6

2077

Odds Ratio (M‐H, Fixed, 95% CI)

0.45 [0.36, 0.57]

3 Wearing mask Show forest plot

5

1991

Odds Ratio (M‐H, Fixed, 95% CI)

0.32 [0.25, 0.40]

4 Wearing N95 mask Show forest plot

2

340

Odds Ratio (M‐H, Fixed, 95% CI)

0.09 [0.03, 0.30]

5 Wearing gloves Show forest plot

4

712

Odds Ratio (M‐H, Fixed, 95% CI)

0.43 [0.29, 0.65]

6 Wearing gowns Show forest plot

4

712

Odds Ratio (M‐H, Fixed, 95% CI)

0.23 [0.14, 0.37]

7 All interventions Show forest plot

2

369

Odds Ratio (M‐H, Fixed, 95% CI)

0.09 [0.02, 0.35]

Figures and Tables -
Comparison 1. Case control studies