“…As a positive treatment response is usually defined in the literature as greater than 20% reduction in BPRS (Lachar et al, 1999), our findings showed that a short LOS in our ward was highly effective. Our results are consistent with previous systematic reviews (Alwan et al, 2008;Johnstone and Zolese, 2009) and the two Italian surveys (Ballerini et al, 2007a(Ballerini et al, , 2007bBarbato et al, 2010;Preti et al, 2009), suggesting that a short hospitalization is sufficient for the majority of patients (Frieri et al, 2013).…”