Table 2.

Quality of intervention^* evidence

Study	Sessions <= 2	Having Follow-up	Intervention fidelity < 3 items	Quality1
Hosseinian (2012)	---	-1	-1	Low (-2)
Asadpour (2012)	---	-1	---	Moderate (-1)
Zarepour (2010)	---	-1	-1	Low (-2)
Salimi (2012)	----	-1	-1	Low (-2)
Nasr Isfahani (2013)	---	-1	-1	Low (-2)
Etemadi (2006)	---	-1	---	Moderate (-1)
Ebrahimi (2011)	---	---	-1	Moderate (-1)
Rezaei (2013)	---	-1	---	Moderate (-1)
Shakarami (2014)	---	---	-1	Moderate (-1)
Ghadam Kheir (2013)	---	-1	-1	Low (-2)
Mazlomi (2012)	---	-1	-1	Low (-2)
Etemadi (2014)	---	-1	-1	Low (-2)
Hosseini Zand (2013)	---	---	---	High (0)
Shariatzadeh (2014)	---	-1	-1	Low (-2)
Oulia (2006)	---	-1	-1	Low (-2)
Babaei Garmkhani (2014)	---	-1	-1	Low (-2)
Botlani (2010)	---	---	-1	Moderate (-1)
Hosseini (2013)	---	-1	-1	Low (-2)
Nasr Isfahani (2010)	---	-1	-1	Low (-2)
Bahrami (2009)	---	---	---	High (0)
Durana (1997)	---	---	---	High (0)
Khanjani Veshki (2012)	---	-1	----	Moderate (-1)
Duffey (2004)	-1	-1	----	Low (-2)
Nayari (2014)	---	---	-1	Moderate (-1)
Hajian (2013)	---	-1	-1	Low (-2)
Nasirnejhad Karaj (2014)	---	-1	-1	Low (-2)
Mami (2015)	---	-1	---	Moderate (-1)
Farbod (2014)	---	-1	-1	Low (-2)
Mohamadi (2013)	No information	-1	-1	Low (-2)
Coutta (2001)	No information	---	---	High (0)
Nasirnejhad Tehran (2014)	---	-1	-1	Low (-2)
Sharifian (2011)	---	---	-1	Moderate (-1)
Hickmon (1997)	---	-1	---	Moderate (-1)
Soltani (2013)	---	-1	-1	Low (-2)
Denton (2000)	---	-1	----	Moderate (-1)
Karimi (2012)	---	-1	-1	Low (-2)
Yousefi (2014)	---	---	---	High (0)
Momeni Javid (2014)	---	---	-1	Moderate (-1)

^*Quality of the studies downgraded for each of the following studies: 1) implementing intervention in less than two sessions, 2) lack of follow-up, 3) the accuracy of reported interventional information for fewer than three items