“…The rates of homelessness among psychiatric patients in international studies differ considerably. In this context, the different methodological approaches have to be considered: there have been European [ 4 , 24 , 28 , 30 – 32 , 40 , 43 , 45 ] and north American studies [ 13 , 25 , 41 ] vs. analysis from low-income Afro-Asian countries [ 17 , 33 , 37 , 44 ], evaluation of a complete cohort [ 4 , 24 , 30 , 32 , 43 , 45 ] vs. a defined subgroup with distinct patient characteristics [ 13 , 17 , 25 , 28 , 31 , 33 , 37 , 40 , 41 , 44 ], the inclusion of current homelessness vs. probability and history thereof [ 13 , 30 ], a definition of literally homeless vs. no private home [ 40 , 45 ]. A rate of 2,4% homelessness as observed in the present study, is a relatively low prevalence, but other European studies with a similar design (inclusion of all consecutive psychiatric admissions) also found single digit prevalences of 0.5-1.58% in Denmark (“one-year cumulative probability of first homelessness after discharge”, [ 30 ], 1.6% in Switzerland [ 24 ], and 3.8% in the UK (focus on ethnical differences in treatment, [ 4 ].…”