From: Melatonin for pre-medication in children: a systematic review
Random sequence generation (selection bias) | Allocation concealment (selection bias) | Blinding of participants (performance bias) | Blinding of IMP administrators (performance bias) | Blinding of outcome assessment (detection bias) | Incomplete outcome data (attrition bias) | Selective reporting (reporting bias) | |
---|---|---|---|---|---|---|---|
Almenrader (2013) | + | + | – | – | + | + | + |
Ansari (2018) | + | / | + | – | + | + | + |
Faghihian (2018) | + | + | + | / | + | / | + |
Gitto (2016) | + | + | + | + | + | / | + |
Impellizzeri (2017) | + | + | + | + | + | + | + |
Isik (2008) | + | / | + | / | + | + | + |
Kain (2009) | + | + | + | + | + | + | + |
Khalifa (2013) | + | + | + | / | + | + | + |
Kurdi (2016) | + | + | + | – | + | + | + |
Ozcengiz (2011) | + | + | + | / | + | + | + |
Samarkandi (2005) | + | + | + | + | + | + | + |