Confounding Selection of participants Classification of interventions Deviations from intended interventions Missing data Measurement of the outcome Selection of the reported result Overall assessment
Culha MG,2020 MR MR NI NI NI MR LR Moderate
Khan HL,2018 SR MR NI NI NI MR LR Serious
Canat L,2017 MR SR NI NI NI MR LR Serious
Öztürk MI, 2012 LR MR NI NI NI LR LR Moderate
Corona G,2010 MR MR NI NI NI MR LR Moderate
Cihan A,2009 LR LR LR LR MR LR LR Moderate
Carani C, 2005 LR LR MR MR NI LR LR Moderate
Waldinger MD, 2005 SR SR NI NI NI LR MR Serious
Corona G,2004 MR MR NI NI NI MR LR Moderate
Abbreviations: LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information LR: low Risk, MR: Moderate risk, SR: Serious risk, NI: No information