Population normative data for three cognitive screening tools for older adults in sub-Saharan Africa.
Population normative data for three cognitive screening tools for older adults in sub-Saharan Africa.
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DOI：
10.1590/1980-57642021dn15-030005
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发表时间：
2021-07
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影响因子：
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通讯作者：
Walker R
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作者：
Gray WK;Paddick SM;Ogunniyi A;Olakehinde O;Dotchin C;Kissima J;Urasa S;Kisoli A;Rogathi J;Mushi D;Adebiyi A;Haule I;Robinson L;Walker R
在撒哈拉以南非洲（SSA），认知筛查因文化和教育因素而变得复杂，现有的规范价值观可能不适用。非洲老年痴呆症识别（IDEA）认知筛查是一种低识字率的痴呆症诊断方法，具有良好的准确性。本研究的目的是报告在SSA有代表性的社区居住的老年人中IDEA和其他简单测量的规范性价值[即，分类语言流畅性，建立阿尔茨海默病登记联盟（CERAD） 10字列表]。对坦桑尼亚乞力马扎罗山12个代表性村庄≥60岁的居民和尼日利亚奥约州Akinyele地方政府区3个社区≥65岁的居民进行认知筛查。规范数据按年龄、性别和教育程度分类生成。坦桑尼亚共有3,011人（即57.3%的女性和26.4%的未受教育）和尼日利亚1,117人（即60.3%的女性和64.5%的未受教育）接受了筛查。年龄越大，受教育程度越低，女性的得分越低。IDEA的第50十分位值为13（60-64岁）对8/9（85岁以上），未受教育的10-11对初等教育的13，女性11/12对男性13。10字列表延迟回忆和分类语言流畅性的规范性值随教育程度的不同而不同[即，未受教育的延迟回忆均值为2.8[标准差（SD） 1.7]，中等教育的延迟回忆均值为4.2 (SD 1.2)；未受教育程度为9.2 (SD 4.8)，中等教育程度为12.2 (SD 4.3)，显著低于公布的高收入国家的水平。应调整常用认知筛查项目的临界值，以适应当地的规范值，特别是在教育水平较低的地方。
In sub-Saharan Africa (SSA),cognitive screening is complicated by both cultural and educational factors, and the existing normative values may not be applicable. The Identification of Dementia in Elderly Africans (IDEA) cognitive screen is a low-literacy measure with good diagnostic accuracy for dementia. The aim of this study is to report normative values for IDEA and other simple measures [i.e., categorical verbal fluency, the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD) 10-word list] in representative community-dwelling older adults in SSA. Individuals aged ≥60 years resident in 12 representative villages in Kilimanjaro, Tanzania and individuals aged ≥65 years resident within three communities in Akinyele Local Government Area, Oyo State, Nigeria underwent cognitive screening. The normative data were generated by the categories of age, sex, and education. A total of 3,011 people in Tanzania (i.e., 57.3% females and 26.4% uneducated) and 1,117 in Nigeria (i.e., 60.3% females and 64.5% uneducated) were screened. Individuals with higher age, lower education, and female gender obtained lower scores. The 50th decile values for IDEA were 13 (60–64 years) vs. 8/9 (above 85 years), 10–11 uneducated vs. 13 primary educated, and 11/12 in females vs. 13 in males. The normative values for 10-word list delayed recall and categorical verbal fluency varied with education [i.e., delayed recall mean 2.8 [standard deviation (SD) 1.7] uneducated vs. 4.2 (SD 1.2) secondary educated; verbal fluency mean 9.2 (SD 4.8) uneducated vs. 12.2 (SD 4.3) secondary educated], substantially lower than published high-income country values. The cut-off values for commonly used cognitive screening items should be adjusted to suit local normative values, particularly where there are lower levels of education.