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Table 2 Risk of bias summary for finally selected randomized studies

From: Efficacy of alternative or adjunctive measures to conventional treatment of peri-implant mucositis and peri-implantitis: a systematic review and meta-analysis

  Random sequence generation Allocation concealment Blinding of participants and personnel Blinding of outcome assessment Incomplete outcome data
Schenk et al. [16] ? +
Strooker et al. [22] ? +
Porras et al. [20] ? +
Büchter et al. [26] + ? +
Romeo et al. [42, 57] ? +
Karring et al. [28] ? + + +
Schwarz et al. [25] + + +
Renvert et al. [32] + + + +
Schwarz et al. [24] + + +
Schwarz et al. [48, 51, 54] + + +
Renvert et al. [29] + + + +
Renvert et al. [31] + ? + +
Renvert et al. [30] + + +
Sahm et al.; John et al. [27, 33] + + +
Thone-Mühling et al. [17] ? +
Hallström et al. [19] + ? +
Schwarz et al. [49, 50, 52] + + +
Aghanzadeh et al. [43] ? ? + +
Machtei et al. [23] + + ? + +
Wohlfahrt et al. [55, 58] + + + +
deWaal et al. [38] + + ? + +
McKenna et al. [78] + + +
Schär et al.; Bassetti et al. [34, 37] + +  
deWaal et al. [39] + + ? + +
Ji et al. [15] + ? + +
Papadopoulos et al. [41] + + +
Riben Grundström et al. [21] + + + +
  1. + low, − high, ? unclear