Thieves' MarketAnalysis of the Relationship Between Cognitive Decline and Physical Function in Older Adults Who Participated in Health Measurement Events Using Classification and Regression Tree (CART)Itotani, Keisuke PT, MSc; Ueda, Yuya PT, MSc; Murata, Shunsuke PT, MSc; Saito, Takashi PT, MSc; Ono, Rei PhD, PT, MPHAuthor Information Department of General Rehabilitation, Faculty of Allied Health Sciences, Yamato University, Osaka, Japan (Mr Itotani); Department of Community Health Sciences, Kobe University Graduate School of Health Sciences, Kobe, Japan (Messrs Itotani, Ueda, Murata, and Saito and Dr Ono); Division of Rehabilitation Medicine, Kobe University Hospital, Kobe, Japan (Messrs Ueda and Saito); and Japan Society for the Promotion of Science, Chiyoda, Tokyo, Japan (Mr Murata). Correspondence: Keisuke Itotani, PT, MSc, Department of General Rehabilitation, Faculty of Allied Health Sciences, Yamato University, 2-5-1 Katayama-cho, Suita City, Osaka 564-0082, Japan ([email protected]). The authors thank the participants for their contribution to the study. The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article. Topics in Geriatric Rehabilitation: October/December 2020 - Volume 36 - Issue 4 - p 230-236 doi: 10.1097/TGR.0000000000000286 Buy Metrics Abstract 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. © 2020 Wolters Kluwer Health, Inc. All rights reserved.