[A case-control study on the influencing factors to mild cognitive impairment among the community-based elderly population].

Objective: To explore the influencing factors on mild cognitive impairment among the community-based elderly population.

Methods: A 'n : m' matched case-control study was conducted to analyze the risk factors. Cox regression model of survival analysis was selected to deal with non-geometric proportional matched data which was difficult to analyze by logistic regression model.