Nordenskiöld U, Grimby G, Hedberg M, Wright B, Linacre J M
Department of Rehabilitation Medicine, Sahlgrenska University Hospital, Göteborg, Sweden.
Arthritis Care Res. 1996 Oct;9(5):358-67. doi: 10.1002/1529-0131(199610)9:5<358::aid-anr1790090504>3.0.co;2-b.
To use Rasch analysis to transform the ordinal score from a newly developed instrument, the Evaluation of Daily Activities Questionnaire (EDAQ), in order to obtain unidimensional linear measures; to analyze whether items change in difficulty with interventions; and to follow changes in subjects' degree of ability.
Twenty-one women with rheumatoid arthritis rated their perceived difficulty without and with assistive devices or altered working methods using the EDAQ; the EDAQ consists of 102 items of daily activities, divided into 11 dimensions.
All items in the EDAQ could be structured into an acceptable model from "hard" to "easy" with the subjects overall measures ranging from "more able" to "less able." Forty-one items showed a significant reduction of difficulty with interventions. For some items results indicated that easier initial difficulty led to greater effect of interventions. In general, difficulty without assistive devices could not predict difficulty with interventions. Twenty women demonstrated a significant increase in activities of daily living (ADL) ability after interventions.
The EDAQ analyzed with the Rasch model, demonstrated a hierarchical order of difficulty in 102 items showing that it was possible to evaluate the effect of using assistive devices or altered working methods.
运用拉施分析方法对新开发的工具——日常活动问卷（EDAQ）的有序评分进行转换，以获得单维线性测量结果；分析项目难度是否会因干预措施而改变；并跟踪受试者能力程度的变化。
21名类风湿性关节炎女性使用EDAQ对她们在无辅助设备以及有辅助设备或改变工作方法情况下所感知到的难度进行评分；EDAQ由102项日常活动组成，分为11个维度。
EDAQ中的所有项目都可以构建成一个从“难”到“易”的可接受模型，受试者的总体测量结果范围为从“能力更强”到“能力更弱”。41个项目显示干预后难度显著降低。对于一些项目，结果表明初始难度越低，干预效果越大。一般来说，无辅助设备时的难度无法预测干预后的难度。20名女性在干预后日常生活活动（ADL）能力显著提高。
用拉施模型分析的EDAQ显示，102个项目存在难度等级顺序，表明可以评估使用辅助设备或改变工作方法的效果。
