ABSTRACT
Objective T o explore the value of M odified O vert A ggression Scale (M O A S ) on predicting serious aggressive behavior in the inpatients w ith m ental disorders and to provide theoretical basis for violence risk assessm ents in the inpatients w ith m ental disorders. Methods T otal 918 inpatients in a psy-chiatric hospital w ere evaluated by trained m edical w orkers using M O A S in Septem ber 2009, and their serious violent behavior w ere follow ed up for 2 years. T he value of M O A S on predicting violence in the inpatients w ith m ental disorders w as analyzed by SPSS 21.0. Results (1) C om pared to the patients w ithout serious aggressive behaviors, the patients w ith serious aggressive behavior w ithin 2 years show ed significantly higher scores (P<0.05) on verbal aggression, aggression against property, physical aggres-sion and total w eighted score of M O A S; (2) Significant correlation w as found betw een the score of ver-bal aggression and the serious acts of violence w ithin 2 years (P<0.05); (3) Scores of verbal aggres-sion, physical aggression and total w eighted score of M O A S had predictive value on serious aggressive behaviors w ithin 2 years. Conclusion M O A S has certain value on predicting the serious aggressive be-haviors of patients w ith m ental disorders w ithin 2 years.