Table 2.

Quality assessment CTAM ratings for papers categorized by study design.

Design	Study	Total CTAM score	Mean Score (SD)
Case study Case series	Callcott et al., 2004	9	11.00 (2.45)
	Hamblen et al., 2004	12
	Kevan et al., 2007	14
	Kayrouz and Vrklevski, 2015	9
Un-controlled study	Rosenberg et al., 2004	28	29.80 (4.27)
	Mueser et al., 2007	34
	Frueh et al., 2009	34
	Lu et al., 2009	24
	van den Berg and van der Gaag, 2012	29
Controlled study (non-randomised)	Trappler and Newville, 2007	26	n/a
Controlled study (RCT)	Bernard et al., 2006	67	75.20 (15.07)
	Mueser et al., 2008	87
	Jackson et al., 2009	77
	de Bont et al., 2013a	54
	van den Berg et al., 2015	91
	Grand mean (SD)	39.67 (28.38)