THE MEASUREMENT OF INSTRUMENTAL ADL - CONTENT VALIDITY AND CONSTRUCT-VALIDITY

被引：49

作者：

AVLUND, K

SCHULTZLARSEN, K

KREINER, S

机构：

[1] Institute of Social Medicine, University of Copenhagen, Panum Institute, Copenhagen, 2200

[2] The Glostrup University Hospital, Glostrup

[3] Danish Institute of Educational Research, Copenhagen

来源：

AGING-CLINICAL AND EXPERIMENTAL RESEARCH | 1993年 / 5卷 / 05期

关键词：

CONSTRUCT VALIDITY; CONTENT VALIDITY; FUNCTIONAL ABILITY; INSTRUMENTAL ACTIVITIES OF DAILY LIVING; RASCH MODEL;

D O I：

10.1007/BF03324192

中图分类号：

R592 [老年病学]; C [社会科学总论];

学科分类号：

03 ; 0303 ; 100203 ;

摘要：

A new measure of Instrumental Activities of Daily Living (IADL), which is able to discriminate among the large group of elderly who do not depend on help, was tested for content validity and construct validity. Most assessments of functional ability include Physical ADL (PADL) and Instrumental ADL (IADL). PADL-scales assess the basic capacity of persons to care for themselves. IADL-scales are used to assess somewhat higher levels of performance, such as the ability to perform household chores or go shopping. Data were collected from 734 70-year-old people in Denmark in the county of Copenhagen. The measure of Instrumental ADL included 30 activities in relation to tiredness and reduced speed. Construct validity was tested by the Rasch model for item analysis; internal validity was specifically addressed by assessing the homogeneity of items under different conditions. The Rasch item analysis of IADL showed that 14 items could be combined into two qualitatively different additive scales. The IADL-measure complies with demands for content validity, distinguishes between what the elderly actually do, and what they are capable of doing, and is a good discriminator among the group of elderly persons who do not depend on help. It is also possible to add the items in a valid way. However, to obtain valid IADL-scales, we omitted items that were highly relevant to especially elderly women, such as house-work items. We conclude that the criteria employed for this IADL-measure are somewhat contradictory.

引用

页码：371 / 383

页数：13

共 65 条

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