Antireflux surgery vs medical treatment for gastroesophageal reflux disease: A meta-analysis

Table 3 Summary of risk of bias assessment for the 7 studies included in meta-analysis

Ref.	Sequence generation adequate	Allocation concealed	Blinding		Intention-to-treat analysis performed	Exact data available
			Patients	Healthcare providers
Mahon et al[14]	Yes	Unclear	No	No	No	Yes
Mehta et al[15]	Yes	Unclear	No	No	Yes	Yes
Grant et al[16,17]	Yes	Yes	No	No	Yes	Yes
Lundell et al[6,18]	Unclear	Unclear	No	No	Yes	Yes
Anvari et al[19,20]	Yes	Yes	No	No	No	Yes
Spechler et al[21]	Yes	Yes	No	No	Yes	Yes
Lundell et al[22] and Galmiche et al[23]	Unclear	Unclear	No	No	Yes	Yes