“…Most of the included studies diagnosed schizophrenia according to the DSM criteria apart from two studies which used the ICD-10 classification criteria (Ikai et al, 2013;Heggelund et al, 2012). Three studies included both inpatients and outpatients Ho et al, 2012;Heggelund et al, 2012), two studies relied solely on outpatients (Ikai et al, 2013;Varambally et al, 2012), four studies included only inpatients (Manjunath et al, 2013;Georgiev et al, 2012;Oertel-Knöchel et al, 2014;Visceglia and Lewis, 2011), and four studies did not specify the setting (Scheewe et al, , 2012Battaglia et al, 2013;Takahashi et al, 2012). More detailed characteristics of the participants are presented in Table 1 Studies included in a meta-analysis (n=0) …”