... Across the 28 papers identified in this review, ten papers (seven studies) specifically examined PCT rather than ST, SC or NDST (Alexopoulos et al., 2001;Areán et al., 2010;Feaster et al., 2010;Blanco & Ray, 2011;Blanco, Ray & Holliman, 2012;Bratton, et al., 2013;Eyssen, et al., 2013;Gibbard & Hanley, 2008;Koszyci, Bisserbe, Blier, Bradwejn & Markowitz, 2012;Stiles, Barkham, Mellor-Clark & Connell, 2009). Results across these studies are similar to what was found overall in this review; where PCT was the primary candidate (or equal candidate) effective and equivalent results were found for PCT (Blanco & Ray, 2011;Blanco, Ray & Holliman, 2012;Bratton et al., 2013;Gibbard & Hanley, 2008Stiles, Barkham, Mellor-Clark & Connell, 2009) with one exception (Eyssen et al., 2013) which found that PCT was no more effective than treatment as usual. When PCT was delivered as the control condition, the primary therapeutic candidate proved to 12/16 be more effective (Alexopoulos et al., 2001;Areán et al., 2010;Feaster et al., 2010;Koszyci, Bisserbe, Blier, Bradwejn & Markowitz, 2012) again reflecting the general methodological concerns in this area. ...