Université de Limoges, IFR 145 GEIST, Institut d'Epidémiologie Neurologique et de Neurologie Tropicale, EA 3174 NeuroEpidémiologie Tropicale et Comparée, Limoges, France.
Neuroepidemiology. 2010;35(1):12-6. doi: 10.1159/000301715. Epub 2010 Mar 25.
Our aim was to validate the use of historical events as tools for estimating the age of people > or = 65 years in Cotonou (Benin).
The survey was conducted in Cotonou, the economic capital of Benin. We included people aged > or = 65 years, with at least a primary education level and an administrative document certifying their date of birth. The historical events were the solar eclipse of 1946 covering the national territory and the date of independence (1st August 1960) of Dahomey (Benin). Agreement between estimated and actual age was assessed by the intraclass correlation coefficient and the Bland and Altman graphical representation.
We included 112 subjects. The intraclass correlation coefficient between actual and estimated age by the use of historical landmarks was 0.87 (95% CI = 0.81-0.91), i.e. an excellent concordance. The graph of Bland and Altman did not demonstrate any systematic error of estimation.
The development of similar tools in other parts of Africa and developing countries may improve the quality of information collected in epidemiological studies and thereby enhance the accuracy of the results of studies conducted on age-related disorders such as dementia.
本研究旨在验证将历史事件作为评估科托努（贝宁）65 岁及以上人群年龄的工具的有效性。
本研究在贝宁经济首都科托努进行。我们纳入了至少受过小学教育且拥有行政文件证明其出生日期的 65 岁及以上人群。所选择的历史事件为覆盖全国的 1946 年日食和达荷美（贝宁）独立日（1960 年 8 月 1 日）。通过组内相关系数和 Bland 和 Altman 图形表示评估实际年龄与估计年龄之间的一致性。
我们纳入了 112 名研究对象。使用历史地标估计年龄与实际年龄之间的组内相关系数为 0.87（95%置信区间=0.81-0.91），即具有极好的一致性。Bland 和 Altman 图形未显示任何估计的系统误差。
在非洲其他地区和发展中国家开发类似的工具，可能会提高流行病学研究中收集信息的质量，从而提高与年龄相关疾病（如痴呆）相关研究结果的准确性。
