Karagiozis H, Gray S, Sacco J, Shapiro M, Kawas C
Johns Hopkins Bayview Medical Center, Asthma and Allergy Center, Baltimore, MD 21224, USA.
Gerontologist. 1998 Feb;38(1):113-21. doi: 10.1093/geront/38.1.113.
The Direct Assessment of Functional Abilities (DAFA) was designed as a direct measure of instrumental activities of daily living (IADLs) that could be compared with an indirect assessment of IADLs by the Pfeffer Functional Activities Questionnaire (PFAQ). The DAFA (28 demented and 15 control subjects) and PFAQ (subjects and informants) were administered twice, together with a brief cognitive battery. Demented subjects performed significantly worse on direct assessment (DAFA) than predicted by self-report (PFAQ), and overestimation of abilities increased with severity of dementia. In contrast, informants tended to underestimate abilities of demented subjects, but not to a significant degree. Control (nondemented) subjects had comparable results with the two methods. The DAFA may provide a more objective measure of functional status in demented subjects than do indirect methods of assessment.
功能能力直接评估法（DAFA）旨在直接测量日常生活工具性活动（IADLs），并可与通过 Pfeffer 功能活动问卷（PFAQ）对 IADLs 进行的间接评估相比较。对 28 名痴呆患者和 15 名对照受试者进行了两次 DAFA 评估，同时对受试者和信息提供者进行了两次 PFAQ 评估，并进行了一组简短的认知测试。痴呆患者在直接评估（DAFA）中的表现明显比自我报告（PFAQ）预测的要差，且能力高估随着痴呆严重程度的增加而增加。相比之下，信息提供者往往低估痴呆患者的能力，但程度不显著。对照（非痴呆）受试者在两种方法下的结果相当。与间接评估方法相比，DAFA 可能为痴呆患者的功能状态提供更客观的测量。
