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Table 4 Quality assessment of included studies

From: Simultaneous implant placement with autogenous onlay bone grafts: a systematic review and meta-analysis

Study Random selection in population Defined inclusion/exclusion criteria Reported loss to follow-up Validated measurements Statistical analysis Estimated potential risk of bias
Adell et al. 1990 [24] No No Yes Yes Yes High
Isaksson and Alberius 1992 [23] No No No No No High
Åstrand et al. 1996 [22] No No No Yes Yes High
McGrath et al. 1996 [21] No No No Yes Yes High
Vermeeren et al. 1996 [32] No No No Yes Yes High
Steenberghe et al. 1997 [31] No No No Yes Yes High
Verhoeven et al. 1997 [30] No No No No No High
Lekholm et al. 1999 [29] No Yes Yes No No High
Nyström 2004 [28] No No No Yes Yes High
van der Meij et al. 2005 [27] No Yes Yes Yes Yes Moderate
Boronat et al. 2010 [26] No Yes Yes Yes Yes Moderate
Kang et al. 2015 [8] No Yes Yes Yes Yes Moderate
El Zahwy et al. 2019 [25] Yes Yes Yes Yes Yes Low
Kablan 2020 [20] No No No No No High
Misch and Dietsh 1994 [16] No No No No No High
Triplett and Schow 1996 [17] No No No No No High
Widmark et al. 2001 [18] No Yes Yes Yes Yes Moderate
Peñarrocha-Diago et al. 2013 [9] No Yes Yes Yes Yes Moderate
Tosun et al. 2017 [19] No Yes Yes Yes Yes Moderate