Investigation of Cut-Off Points for the Operation of a Simplified Questionnaire Comprehensively Captures Driving Characteristics (SQ-CCDC) to Capture the Driving Characteristics of Older Drivers.

− For a Simplified Assessment with Sequential Latent Ranks −

Abstract

The SQ-CCDC, a simplified questionnaire with a variety of driving-related variables, was developed using items that can represent differences among elderly drivers, and it is better to be able to provide feedback immediately after answering in order to operationalise it. It is not realistic to estimate the latent rank of respondents from their response patterns using LRT software. It is more practical to be able to estimate the latent rank from the sum score. In this report, we examined the cut-off points so that ranks can be analogously estimated from the sum scores of each subscale.