Chapter 4  Offenders with Mental Disorder

Section 1  Trends in Crimes

  Fig. 3-4-1-1 shows the number of mentally disabled persons, etc. (mentally disabled persons and persons suspected to be mentally disabled; hereinafter the same in this section), cleared for non-traffic penal code offenses over the last 10 years.

Fig. 3-4-1-1  Number of mentally disabled persons, etc., cleared for non-traffic penal code offenses (1998–2007)

  Among the 365,577 persons cleared for non-traffic penal code offenses in 2007, 1,270 (up by 20.5% from the previous year) were found to be mentally disabled and 1,519 (up by 1.9% (id.)) were suspected to be mentally disabled. Mentally disabled persons, etc., accounted for 0.8% of the total in 2007.
  Table 3-4-1-2 shows the number of mentally disabled persons, etc. cleared for non-traffic penal code offenses in 2007 by type of offense.

Table 3-4-1-2  Number of mentally disabled persons, etc. cleared for non-traffic penal code offenses by type of offense (2007)

  The ratio of mentally disabled persons, etc. among the total number of cleared persons was the highest for arson, followed by homicide.