The Smell Identification Test as a measure of olfactory identification ability in schizophrenia and healthy populations: a Rasch psychometric study.
The Smell Identification Test as a measure of olfactory identification ability in schizophrenia and healthy populations: a Rasch psychometric study.
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DOI：
10.1037/0021-843x.113.2.207
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发表时间：
2004-05
影响因子：
4.6
通讯作者：
K. Minor;B. Wright;Sohee Park
中科院分区：
文献类型：
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作者：
K. Minor;B. Wright;Sohee Park
本研究使用项目反应理论模型，检查了宾夕法尼亚大学气味识别测试（UPSIT；R. L. Doty，1995）在 133 名对照者和 54 名慢性精神分裂症 (SZ) 门诊患者中的表现。结果显示，UPSIT 项目贡献 1 个因素，涵盖 8 个标准测量误差范围，并阐明 3 个能力级别。尽管区分能力高于平均水平的人并不困难，但该测试在检测中度损伤方面具有诊断效用。与项目难度无关，有 13 个项目将患者与对照组区分开来。当 45 名患者和 45 名对照者在性别和年龄上进行匹配时，患者准确度仍然显着降低。研究结果支持了测试的实用性，并证明了传统数据分析对测试性能的复杂性不敏感。
This study examines University of Pennsylvania Smell Identification Test (UPSIT; R. L. Doty, 1995) performance in 133 controls and 54 chronic, medicated outpatients with schizophrenia (SZ) using item-response theory modeling. Results show that UPSIT items contribute to 1 factor, cover a range of 8 standard errors of measurement, and articulate 3 ability levels. Although it is not difficult enough to discriminate among persons of above-average ability, the test has diagnostic utility in detecting moderate impairment. Independent of item difficulty, 13 items differentiate patients from controls. When 45 patients and 45 controls were matched on gender and age, patient accuracy remained significantly reduced. The findings support the test's utility and demonstrate how traditional data analysis is insensitive to complexities in test performance.