Purpose to estimate the risk for contralateral breast cancer in members of BRCA1 - and BRCA2-positive families and to determine predictive risk factors.

目的在BRCA1和BRCA2基因表达阳性的家族成员中评估对侧乳腺癌的发病风险，以明确预测风险因子。

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Of the many risk factors linked to dementia, researchers have determined which are the most predictive.

在所有与痴呆有关的风险因素中，研究人员确定了哪些是最有预测力的因素。

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Method The study methods of this project included dynamic disease surveillance, multiple risk factors examinations, cross - sectional and prospective study, and modeling of predictive models, etc.

方法本专题采用的研究方法包括：疾病动态监测、危险因素动态监测、横断面研究、前瞻性观察、生态学比较和模型预测等流行病学方法。

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