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Table 2 Risk of bias assessment of observational studies based on ROBINS-I

From: Optimal strategies for COVID-19 prevention from global evidence achieved through social distancing, stay at home, travel restriction and lockdown: a systematic review

Author and
year
Bias due to confounding Bias in selection of participants into the study Bias in classification of interventions Bias due to deviations from intended interventions Bias due to missing data Bias in measurement of outcomes Bias in selection of the reported result Overall risk of bias
Moritz 2020 [16] Moderate Low Low Low Moderate Moderate Low Moderate
Chad 2020 [17] Moderate Low Low Low Moderate Moderate Low Moderate
Hien 2020 [18] Moderate Low Low Low Moderate Moderate Low Moderate
Steffen 2020 [19] Moderate Low Low Low Moderate Moderate Low Moderate
Hamada 2020 [20] Moderate Moderate Low Low Moderate Moderate Low Moderate
Abel 2020 [21] Moderate Low Low Low Moderate Moderate Low Moderate
Charles 2020 [22] Moderate Low Low Low Moderate Moderate Low Moderate
Shanlang 2020 [23] Moderate Low Low Low Moderate Moderate Low Moderate
Yohannes 2020 [24] Moderate Low Low Low Moderate Moderate Low Moderate
James 2020 [25] Moderate Low Low Low Moderate Moderate Low Moderate
Ekienabor 2020 [26] Moderate Low Low Low Moderate Moderate Moderate Moderate