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Table 2 ROBINS-I tool risk of bias in non-randomised studies

From: Dental implants and risk of bleeding in patients on oral anticoagulants: a systematic review and meta-analysis

Study Confounding Selection of participants Intervention classification Deviation from intervention Missing data Measurement of outcome Selection of reported result Overall
Manor 2020 [6] 2 2 3 2 1 3 2 2
Sannino 2020 [12] 2 2 1 1 1 3 2 1
Galletti 2020 [11] 3 3 2 2 3 2 2 3
Okamoto 2018 [17] 3 3 2 2 2 3 2 3
Gomez-Moreno 2018 [14] 2 2 2 1 1 2 2 2
Clemm 2016 [15] 2 1 2 2 1 2 1 1
Gomez-Moreno 2016 [13] 2 3 1 1 1 3 3 2
Bacci 2011 [16] 2 3 1 1 3 2 1 2
  1. Risk of bias assessment: 0 – No information | 1 – Low | 2 – Moderate | 3 – Serious | 4 – Critical