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Table 2 Risk of bias assessment of included SRs according to AMSTAR risk of bias assessment tool

From: Zygomatic implants placed in atrophic maxilla: an overview of current systematic reviews and meta-analysis

Systematic review (first author, year) AMSTAR domains
1 2 3 4 5 6 7 8 9 10 11 Total score (quality)
Wang et al. (2015) [49] Y Y Y Y N Y N N Y Y N 7 (medium quality)
Tuminelli et al. (2017) [44] N Y N N N Y N N NA NA N 2 (low quality)
Molinero-Mourel et al. (2016) [47] N Y N Y N Y N N N N N 3 (low quality)
Goiato et al. (2014) [46] Y Y Y N N Y N N Y N N 5 (medium quality)
Chrcanovic et al. (2013) [45] Y Y N Y N Y N N Y N N 5 (medium quality)
Chrcanovic et al. (2013) [15] Y Y Y Y N Y N N Y N N 6 (medium quality)
Aboul-Hosn Centenero et al. (2018) [48] Y Y Y Y N Y Y Y Y Y N 9 (high quality)
  1. Y yes (one point), N no (0 point), NA not applicable (0 point), CA can’t answer (0 point)