The determinants of the secular decline in the incidence of dementia are not clear. The aim of this study was to investigate the influences of four factors—education, wealth, cerebrovascular health, and general health—on the secular decline.

中文翻译：

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迟发性痴呆的可塑性：丹麦的一项全国性队列研究

痴呆症发病率长期下降的决定因素尚不清楚。本研究的目的是调查四个因素——教育、财富、脑血管健康和一般健康——对长期衰退的影响。