Dassanayake Tharaka Lagath, Ariyasinghe Dewasmika Indrapali, Baminiwatta Anuradha
Department of Physiology, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka.
Department of Psychiatry, Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka.
Clin Neuropsychol. 2025 Feb 27:1-14. doi: 10.1080/13854046.2025.2471116.
The aim of this study was to create demographically-adjusted norms for Rey-Osterrieth Complex Figure Test (RCFT) for Sri Lankan adults. Four-hundred and twenty-two healthy, adult participants (age: 19-83 years, education: 5-23 years, 202 men) underwent the RCFT copy, 3-min and 30-minute-recall trials. Age- and education-stratified percentile-based norms and demographically-adjusted regression-based norms were created for copy-trial scores and recall trial scores, respectively. There was a ceiling effect of the copy scores where the maximum possible score (i.e. 36) reached between 25th and 90th percentile depending of the age and the education band. Age, years of education and sex accounted for 25.0% of the variance of the RCFT 3-min-recall scores (adjusted = 0.25, < .0001). The age and years of education explained 25.1% of the variance of the 30-minute recall score (adjusted = 0.251, < .0001). Age accounted for 7%-8% and years of education accounted for 10%-11% of the variances of the recall trial scores. Sex only affected the 3-min recall scores and accounted for only about 1% of the variance. No significant differences in RCFT scores were observed among different ethnic groups. These RCFT norms for Sri Lankan adults fill a hiatus in neuropsychological assessment of visuospatial construction and visual memory. The percentile tables and accompanying software-based calculator with embedded regression equations help clinicians more readily interpret individual test results and account for the RCFT performance variability introduced by demographic variables.
本研究的目的是为斯里兰卡成年人创建经人口统计学调整的雷-奥斯特里思复杂图形测验（RCFT）常模。422名健康成年参与者（年龄：19 - 83岁，受教育年限：5 - 23年，男性202名）接受了RCFT临摹、3分钟和30分钟回忆测验。分别为临摹测验分数和回忆测验分数创建了基于年龄和教育分层的百分位常模以及经人口统计学调整的基于回归的常模。临摹分数存在天花板效应，根据年龄和教育程度范围，最高可能分数（即36分）在第25至90百分位之间达到。年龄、受教育年限和性别占RCFT 3分钟回忆分数方差的25.0%（调整后 = 0.25，< 0.0001）。年龄和受教育年限解释了30分钟回忆分数方差的25.1%（调整后 = 0.251，< 0.0001）。年龄占回忆测验分数方差的7% - 8%，受教育年限占10% - 11%。性别仅影响3分钟回忆分数，且仅占方差的约1%。不同种族群体在RCFT分数上未观察到显著差异。这些斯里兰卡成年人的RCFT常模填补了视觉空间构建和视觉记忆神经心理学评估方面的空白。百分位表以及附带的基于软件的计算器和嵌入式回归方程有助于临床医生更轻松地解释个体测试结果，并考虑人口统计学变量引入的RCFT表现变异性。
