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Objective: To investigate various factors related to cognitive decline and analyze combination of factors and priority. Methods and Results: We measured the demographic data, physical, cognitive, and executive functions of 219 older adults who were divided into 2 groups (a no cognitive decline group and a cognitive decline group). We performed classification and regression tree (CART) analysis using the cognitive decline as dependent variables. Conclusions: By CART, it was revealed that the combination of walking speed less than 1.01 m/s and Trail Making Test part A 107.47 seconds or more is a combination of strongest factors for cognitive decline. The classification accuracy was 92.2% by CART.
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Itotani et al. (2020) studied this question.
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