According to official data of Ministry of Justice of the Russion Federation at the end of 2009, about 153 thousand prisoners with mental disorders were contained in prisons and detention facilities of correctional system, what means that nearly one in five of all convicts had pathology of mind.

To assess the frequency of severe mental disorders were examined all convicts (605 men) who received inpatient treatment in the largest prison hospital of the correctional system (Rybinsk), who left it during 2007.

Of these, 503 (83%) prisoners were discharged after an inpatient treatment back in prison to serve his sentence, and 102 (17%) prisoners were released from punishment in accordance with Article 81 of the Criminal Code of Russia.

Male convicts were 429 (71%) persons (including released - 82 (13.5%)), female convicted - 176 (29%) persons (including released - 20 (3.5%). the average age of female convicts receiving inpatient psychiatric treatment in prisons was 36.3 years, for men - 37.2.

Schizophrenic disorders were detected in 23 (13.1%) women and 86 (20.2) men; Personality disorders were detected in 67 (38%) women, 89 (20.7%) men; Mental retardation was detected in 33 (18,8%) women and 64 (14.9%) men; Organic mental disorders were detected in 38 (21.7%) women and 140 (32.6%) men; Affective disorders were detected in 14 (7.9%) women and 32 (7.4%) men; Dementia was present in one woman (0.5%) and 8 men (1.8%), disorders related to substance abuse were noted only in men - 10 persons (2.4%).