The effect of non-steroidal anti-inflammatory drugs on the osteogenic activity in osseointegration: a systematic review

International Journal of Implant Dentistry

Table 3 Quality and bias assessment of human clinical studies using The Cochrane Collaboration’s Tool [17]

Study	Random sequence generation	Allocation concealment	Blinding of participants/personnel	Blinding of outcome assessment	Incomplete outcome data	Selective reporting	Summary assessment
Alissa et al. [21]	+	+	+	?	+	+	Unclear
Sakka et al. [24]	–	–	–	+	+	+	High
Winnett et al. [25]	n/a	–	–	–	?	+	High

Key: (+) = low risk of bias, (?) = unclear risk of bias, (−) = high risk of bias, n/a= not available