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KMID : 0368820040430020189
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Journal of the Korean Neuropsychiatr Association
2004 Volume.43 No. 2 p.189 ~ p.197
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A Study on the Reliability and Validity of Seoul
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구형모/Ku, Hyoung Mo
김지혜/권의정/김성환/이형석/고혜정/안상미/Kim, Ji-Hae/Kwon, Eui Jung/Kim, Sung Hwan/Lee, Hyoung Suk/Ko, Hye-Jung/Jo, Sangmee
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Abstract
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Objectives : Seoul-Instrumental Activities of Daily Living (S-IADL) was developed to assess elderly person´s instrumental everyday activities. This study aims to develop standardized IADL assessment scale and to confirm the reliability and validity of the S-IADL.
Methods : The 336 controls were included in standardization study. Reliability and validity of S-IADL were tested by 72 Alzheimer´s disease patients and 72 controls matched to age, sex, and education. We also conducted Receiver Operating Characteristics curve for sensitivity and specificity of S-IADL.
Results : Because of positively skewed distribution of S-IADL, standardization data were presented using ISD and 2SD value. Internal consistency, test-retest reliability, and interrater reliability were statistically significant. Principal axis factoring analysis revealed two factors that accounted for 59.95% of the total variance, and second factor was items sensitive to sex (3.preparing food/cooking, 4.household chores). S-IADL was correlated significantly with other standardized cognitive measures, demonstrating good convergent validity. With a cut-off point of 8, the S-IADL had a sensitivity of 83.3% and specificity of 93.1% in the diagnosis of dementia. Also, with a 2SD standardized data, sensitivity was 81.9% and specificity was 93.1%.
Conclusion : Our study showed that the S-IADL could be a reliable and valid tool for the assessment of functional disabilities of Korean dementia patients. Particularly, S-IADL had higher sensitivity and specificity than other IADL instruments, suggesting that it is useful to early detection of dementia. (J Korean Neuropsychiatr Assoc 2004;43 (2) :189-199)
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