A computer adaptive testing approach for assessing physical functioning in children and adolescents

被引:29
作者
Haley, SM
Ni, PS
Fragala-Pinkham, MA
Skrinar, AM
Corzo, D
机构
[1] Franciscan Childrens Hosp, Res Ctr Children Special Hlth Care Needs, Boston, MA USA
[2] Genzyme Corp, Cambridge, MA USA
关键词
D O I
10.1017/S0012162205000204
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
The purpose of this article is to demonstrate: (1) the accuracy and (2) the reduction in amount of time and effort in assessing physical functioning (self-care and mobility domains) of children and adolescents using computer-adaptive testing (CAT). A CAT algorithm selects questions directly tailored to the child's ability level, based on previous responses. Using a CAT algorithm, a simulation study was used to determine the number of items necessary to approximate the score of a full-length assessment. We built simulated CAT (5-, 10-, 15-, and 20-item versions) for selfcare and mobility domains and tested their accuracy in a normative sample (n=373; 190 males, 183 females; mean age 6y 11mo [SD 4y 2m], range 4mo to 14y 11mo) and a sample of children and adolescents with Pompe disease (n=26; 21 males, 5 females; mean age 6y 1mo [SD 3y 10mo], range 5mo to 14y 10mo). Results indicated that comparable score estimates (based on computer simulations) to the full-length tests can be achieved in a 20-item CAT version for all age ranges and for normative and clinical samples. No more than 13 to 16% of the items in the full-length tests were needed for any one administration. These results support further consideration of using CAT programs for accurate and efficient clinical assessments of physical functioning.
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页码:113 / 120
页数:8
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