Possibility to Grasp the Older Drivers’ Conditions from the Triennial Nationwide Survey of Japan for Elderly Welfare

The percentage of older drivers is increasing worldwide. Older adults are driving for their daily lives, including drivers who should not drive, "must-watch drivers", for health conditions, etc. The "Public Survey of Long-Term Care Prevention and Needs in Spheres of Daily Life (Needs Survey)", including the "<i>Kihon</i> Checklist (KCL)", is a triennial nationwide survey conducted by welfare administrations in Japan. The objective of this study was to demonstrate that the Needs Survey can capture situations (e.g., driving avoidance) of older drivers obtained by previous studies, many of which are one-time surveys. As for our methods, we administered a survey with a format of questions used in previous studies combined with KCL to all older adults in Tsurui Village, a rural community in Japan, obtained 393 responses, around half of them, and conducted a logistic regression analysis to estimate whether they were driving or not and a multiple regression analysis for the frequency of driving avoidance. The former analysis showed that KCL could detect must-watch drivers with relatively deteriorated health among not-so-old adults, adding to another one with relatively not-so-bad health among much older adults, and the latter analysis showed that the KCL scores could be an alternative to the self-rating of driving ability used in previous studies. In conclusion, KCL in the Needs Survey is recommended to be a valuable survey for regularly assessing the driving conditions of older drivers nationwide.