Hochrein A, Jonitz L, Hock C, Bell V, Plaum E, Engel R R
Ludwig-Maximilians-Universität Abteilung für Klinische Psychologie und Psychophysiologie, München.
Z Gerontol Geriatr. 1996 May-Jun;29(3):216-22.
The DAFS (Direct Assessment of Functional Status) is a new test for the assessment of competence of demented patients in situations of everyday life. The present study assesses objectivity, temporal stability, concurrent and discriminative validity of a German version of the DAFS. Sixteen patients with a DSM-III-R-diagnosis of dementia of the Alzheimer's type, 8 of which with a mild (MMSE 18-25) and 8 with a moderate (MMSE 12-17) dementia, and 8 control subjects without any symptoms of dementia (MMSE 28-30), matched with the patient groups in age, gender and education, were assessed three times within 3 weeks with the DAFS and once with the NOSGER (an ADL rating scale). The DAFS showed high objectivity (correlation between two test administrators r = .97) and stability (2 week retest reliability r = .98) and was able to discriminate significantly between the study groups and with a strong effect size. Correlations with the total score and the IADL subscale score of the NOSGER were high (r = .81 and r = .86, resp.), whereas correlations with the mood and the disturbing behavior subscale were much lower (both r = .54). This investigation could demonstrate that the DAFS is an objective, stable and valid test instrument. It has a high power to discriminate between demented and non-demented subjects as well as between various degrees of severity of illness. The test items are highly relevant for everyday functioning and the test itself is a good and necessary addition to the use of ADL or IADL rating scales.
直接功能状态评估（DAFS）是一种用于评估痴呆患者日常生活能力的新测试。本研究评估了德语版DAFS的客观性、时间稳定性、同时效度和区分效度。16名被诊断为阿尔茨海默病型痴呆的患者，其中8名患有轻度痴呆（简易精神状态检查表[MMSE]评分为18 - 25），8名患有中度痴呆（MMSE评分为12 - 17），以及8名无任何痴呆症状的对照受试者（MMSE评分为28 - 30），这些对照受试者在年龄、性别和教育程度上与患者组相匹配。在3周内，使用DAFS对他们进行了三次评估，并使用NOSGER（一种日常生活活动能力评定量表）进行了一次评估。DAFS显示出高客观性（两名测试管理者之间的相关性r = 0.97）和稳定性（两周重测信度r = 0.98），并且能够在研究组之间进行显著区分，效应量较大。与NOSGER总分和工具性日常生活活动能力（IADL）子量表得分的相关性较高（分别为r = 0.81和r = 0.86），而与情绪和干扰行为子量表的相关性则低得多（均为r = 0.54）。本调查表明，DAFS是一种客观、稳定且有效的测试工具。它在区分痴呆和非痴呆受试者以及不同疾病严重程度方面具有很高的效力。测试项目与日常功能高度相关，并且该测试本身是对使用日常生活活动能力（ADL）或IADL评定量表的良好且必要的补充。
