. 2017 May 5;9(5):461. doi: 10.3390/nu9050461

Table 2.

Risk of bias summary for included studies.

Author/Year	Risk of Bias ^a	Bias Minimisation Items ^b
Author/Year	Risk of Bias ^a	1	2	3	4	5	6	Other
Dolatkhah, 2015 [36]	Low	+	+	+	+	+	?	Funding & sponsorship free from bias, statistical analysis appropriate
Lindsay, 2015 [33]	Low	+	+	+	+	+	?	Funding & sponsorship free from bias
Jafarnejad, 2015 [35]	Low	+	+	+	+	?	?	Funding & sponsorship free from bias
Karamali, 2015 [34]	Low	+	+	+	+	+	?	Funding & sponsorship free from bias

“+” = response of “yes” to use of the bias minimization item; “?” = response of “uncertain” to the use of the bias minimization item; ^a Assessed using the Cochrane Collaboration tool for assessing risk of bias in RCTs (ref); ^b Bias minimization items: 1. Random sequence generation (selection bias); 2. Allocation concealment (selection bias); 3. Blinding of participants and personnel (performance bias); 4. Blinding of outcome assessment (detection bias); 5. Complete outcome data (attrition bias); 6. Non-selective reporting (reporting bias). Trials receiving a + response for most items are likely to have a low risk of bias.