Table 3.

Quality assessment of the included RCTs

Study	Randomization	Sequence generation	Allocation concealment	Blinding of participants	Blinding of assessors	Selective reporting
Larocque 2006 [37]	Done	Done	Done	Done	Done	No
Ndibazza 2010 [38]	Done	Done	Done	Done	Done	No
Torlesse 2001 [39]	Done	Done	Not clear	Not clear	Not clear	Yes
Haque 2010 [28]	Done	Not clear	Not clear	Done	Not clear	No
Albonico 2002 [14]	Done	Done	Done	Done	Done	No
Taylor 2001 [21]	Done	Not clear	Not clear	Done	Done	Not clear
Adams 1994 [13]	Done	Not clear	Not clear	Done	Not clear	No
Beasley 1999 [25]	Done	Not computerized but done	Not clear	Not done	Done	No
Christian 2009 [36]	Not clear	Not clear	Not clear	Not Clear	Not Clear	Not clear
Halwindi 2011 [27]	Not clear	Not clear	Not applicable	Not applicable	Not clear	No
Olds 1999 [29]	Done	Not clear	Done	Done	Done	Not clear
Rohner 2010 [19]	Done	Not clear	Done	Done	Done	No
Bhargava 2003 [15]	Done	Not clear	Not clear	Not clear	Not clear	No
Palupi 1997 [30]	Done	Not clear	Not clear	Not clear	Not clear	No
Dossa 2001 [26]	Done	Not clear	Not clear	Done	Done	Yes
Hathirat 1992 [24]	Done	Not clear	Not clear	Done	Done	No
Sungthong 2002 [20]	Done	Done	Done	Done	Done	No