Treating Homeless People With Psychiatric Disorders: Evidence From the Italian "Diogene" Project.

Abstract: The aim of the "Diogene Project" is to recruit, evaluate, and treat homeless people affected by psychiatric disorders. Three multidisciplinary street units patrolled the streets in Milan, Italy, two/three evenings per week to recruit participants. A sociodemographic questionnaire, the HoNOS, and the GAF were administered at recruitment (T0), 1 year (T1), and 2 years (T2) after the first evaluation. Personalized treatment (none, social support, psychiatric treatment + social support) was tailored to each patient's needs. One hundred twelve homeless people participated. Forty-six users dropped out after the first assessment. The highest percentage of dropouts was registered among those who did not receive any kind of treatment (67.4%). Time spent on the street was not significantly correlated to adherence and outcome. Interestingly, the greatest improvement in psychopathological symptoms was recorded among patients under both treatments. This study confirms the validity of our model in approaching such vulnerable patients through specific interventions.