Department of Psychiatry, National Cheng Kung University Hospital.
Int J Psychiatry Clin Pract. 2009;13(4):303-6. doi: 10.3109/13651500903056533.
Objective. Instruments to assess aggressive behaviors in the psychiatric ward are crucial for monitoring risky behaviors. The purpose of this study was to assess the validity and reliability of the Chinese version of the Modified Overt Aggression Scale (MOAS). Methods. We translated the English version of MOAS into Chinese. We interviewed and trained two volunteers to act as agitated patients in the seclusion room. One senior psychiatrist, experienced in using the MOAS, directed scenarios of different aggressive intensity and established the standard scores. The validity was assessed by comparing the other raters' scores with those of the director's. Inter-rater reliability was also assessed. Results. Inter-rater reliability, based on Intra-class correlation coefficient (ICC=0.94, P<0.001) and Kendall's W coefficient of concordance (W=0.83, P= 0.001), was high. The validity was assessed by the Mann-Whitney test. The results showed that the raters adequately differentiated (z=- 2.89, P= 0.002) between the above-average and below-average scores of the MOAS. Conclusion. The Chinese version of the MOAS has modest psychometric properties. The model, which used trained volunteers acting as patients and compared their scores with those of the director, may be used in further studies for developing psychometric instruments to assess abrupt behaviors.
评估精神科病房攻击性行为的工具对于监测危险行为至关重要。本研究旨在评估中文版改良外显攻击量表（MOAS）的效度和信度。
我们将 MOAS 的英文版本翻译成中文。我们采访并培训了两名志愿者在隔离室中扮演激动的患者。一位经验丰富的资深精神科医生根据不同的攻击强度指导场景，并建立标准分数。通过比较其他评分者与主任的评分来评估效度。还评估了组内一致性信度。
基于组内相关系数（ICC=0.94，P<0.001）和肯德尔和谐系数（W=0.83，P=0.001）的组内一致性信度较高。通过曼-惠特尼检验评估了效度。结果表明，评分者能够充分区分 MOAS 的平均以上和平均以下分数（z=-2.89，P=0.002）。
中文版 MOAS 具有适度的心理测量特性。该模型使用经过培训的志愿者扮演患者，并将他们的分数与主任的分数进行比较，可用于进一步研究开发评估突发行为的心理测量工具。
