Methamphetamine in Japan: the consequences of methamphetamine abuse as a function of route of administration.

Aims: To determine differences in life backgrounds and clinical features between methamphetamine (MAP) smokers and injectors in Japan.

Setting: Out-patient clinic at a psychiatric centre.

Participants: Among 451 MAP abusers undergoing initial assessments, 116 subjects whom the first author had directly interviewed and treated were studied.