Table 2.

Evaluate the quality of studies with the STROBE checklist

Row	Author (s) and year of publication	Introduction		Materials and methods									Results					Discussion and conclusion
		Title and Abstract	Introduction	study method	Performing environment	Contributors	Variables	Data source and measurement method	Bias	Sample size	Quantitative variables	Statistical analysis methods	Descriptive data	Participants’ reports	Report the original data	The main results of the study	Other analyzes	Report key results	Limitations	Interpretation of results	Generalization	Budget	support
1	Ghadiri-Anari, 2018, [22]	+	+	+	+	+	+	+ +	–	–	+ +	+	+	+	+	+	–	+	+	+	–	–	+
2	Alfti Far, 2017, [23]	+	+	+	+	+	+	+ +	–	–	+ +	+	+	+ +	+ +	+ +	–	+	–	+ +	–	–	+
3	Yadolahi, 2012, [24]	+	+	+	+	+	+	+ +	–	+	+ +	+	+	+	+	+	+	+	+	+ +	–	–	+
4	Abbasian, 2006, [25]	+	+	+	+	+ +	+ +	+ +	–	+	+ +	+	+	+ +	+	+ +	+	+	+	+ +	–	–	+
5	Abbasian, 2007, [26]	+	+	+	+	+	+	+ +	–	+	+ +	+	+	+ +	+	+	+	+	+	+ +	–	–	+
6	Behrozian, 2006, [27]	+	+	+	+	+	+	+ +	–	+	+ +	+	+	+	+	+	+	+	+	+ +	–	–	+
7	Nasiry, 2017, [28]	+	+	+	+	+	+	+ +	–	+	+ +	+	+	+	+	+	+	+	+	+ +	–	–	+
8	Shahbazian, 2011, [29]	+	+	+	+	+	+	+ +	–	+	+	+	+	+	+	+	+	+	+	+	–	–	+
9	Cheraghi, 2010, [30]	+	+	+	+	+	+	+	–	+	+	+	+	+	+	+	+	+	+	+	–	–	+
10	Asgharnezhad, 2019, [31]	+	+	+	+	+	+	+ +	–	+	+	+	+	+	+	+	+	+	+	+	–	–	+