Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Departments of Psychiatry and Neurology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Arch Clin Neuropsychol. 2024 Aug 24;39(6):770-774. doi: 10.1093/arclin/acae022.
to establish a proof-of-concept and ascertain the reliability of an abbreviated 30-second (30s) phonemic fluency measure as a cognitive screening tool in older adults.
in all, 201 English-speaking individuals with normal cognition (NC; n = 119) or cognitive impairment (CI; mild CI or dementia; n = 82) were administered a standard 60s phonemic fluency task (FAS/CFL) with discrete 30s intervals denoted.
for all letters, 30s trial scores significantly predicted 60s scores for the same letter, R2 = .7-.9, F(1, 200) = 850-915, p < .001. As with 60s total scores, 30s cumulative scores (for all three trials) were significantly different between NC and CI groups (p < .001). Receiver operating characteristic analyses showed that 30s total scores distinguished NC and CI groups as effectively (AUC = .675) as 60s total scores (AUC = .658).
these findings support the utility and reliability of a short-form phonemic fluency paradigm, as 30s performance reliably predicted 60s/trial totals and was equally accurate in distinguishing impaired/non-impaired groups.
建立一个概念验证，并确定 30 秒（30s）音素流畅性测量作为认知筛查工具在老年人中的可靠性。
共有 201 名英语为母语的认知正常（NC；n=119）或认知障碍（CI；轻度 CI 或痴呆；n=82）个体接受了标准的 60 秒音素流畅性任务（FAS/CFL），并标记了离散的 30 秒间隔。
对于所有字母，30s 试验分数显著预测了相同字母的 60s 分数，R2=0.7-0.9，F（1, 200）=850-915，p<0.001。与 60s 总分一样，NC 和 CI 组之间 30s 累积分数（三个试验的总和）差异显著（p<0.001）。接受者操作特征分析表明，30s 总分数与 60s 总分数一样有效地区分了 NC 和 CI 组（AUC=0.675）。
这些发现支持了短形式音素流畅性范式的有效性和可靠性，因为 30s 表现可靠地预测了 60s/试验总分，并且在区分受损/未受损组方面同样准确。
