Hall R C
Center for Psychiatry, Florida Hospital, Orlando 32803, USA.
Psychosomatics. 1995 May-Jun;36(3):267-75. doi: 10.1016/S0033-3182(95)71666-8.
The modified Global Assessment of Functioning (GAF) scale has more detailed criteria and a more structured scoring system than the original GAF. The two scales were compared for reliability and validity. Raters who had different training levels assigned hospital admission and discharge GAF scores from patient charts. Intraclass correlation coefficients for admission GAF scores were higher for raters who used the modified GAF (0.81), compared with raters who used the original GAF (0.62). Validity studies showed a high correlation (0.80) between the two sets of scores. The modified GAF also correlated well with Zung Depression scores (-0.73). The modified GAF may be particularly useful when interrater reliability needs to be maximum and/or when persons with varying skills and employment backgrounds--and without much GAF training--must rate patients. Because of the increased structure, the modified GAF may also be more resistant to rater bias.
改良的功能总体评定量表（GAF）比原始GAF具有更详细的标准和更结构化的评分系统。对这两个量表的信度和效度进行了比较。不同培训水平的评估者根据患者病历给出入院和出院时的GAF评分。使用改良GAF的评估者给出的入院GAF评分的组内相关系数更高（0.81），而使用原始GAF的评估者给出的组内相关系数为0.62。效度研究表明，两组评分之间具有高度相关性（0.80）。改良GAF与zung抑郁评分也具有良好的相关性（-0.73）。当需要最大程度地提高评估者间信度和/或当具有不同技能和工作背景且未接受过太多GAF培训的人员必须对患者进行评分时，改良GAF可能特别有用。由于结构更加严谨，改良GAF可能也更能抵抗评估者偏差。
