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Front. Public Health | doi: 10.3389/fpubh.2018.00339

Construction and Validation of the 21 item Fitness-to-Drive Screening Measure Short-Form

 Sherrilene Classen1, 2,  Shabnam Medhizadah1, 2*, Sergio romero1, 3 and Mi J. Lee1, 3
  • 1University of Florida, United States
  • 2Institute for Mobility, Activity & Participation, College of Public Health and Health Professions, University of Florida, United States
  • 3Center of Innovation on Disability & Rehabilitation Research, United States Department of Veterans Affairs, United States

Introduction. The Fitness-to-Drive Screening Measure is a free online screening tool that detects at-risk older drivers, however, it’s 20-minute administration time may render the 54-item tool less than optimal for clinical use. Thus, this study constructed and validated a 21-item FTDS Short-Form (FTDS-SF). Method. This mixed methods study used 200 proxy rater responses and older driver on-road assessments. We conducted a Rasch analysis to examine information at the level of the item and used content validity index scores to select items. Using a receiver operator characteristics curve we determined the concurrent validity of the FTDS-SF to on-road outcomes. Results. Twenty-one items were selected for the FTDS-SF. The area under the curve = .72, indicated the FTDS-SF predicted on-road outcomes with acceptable accuracy. Still, 68 drivers were misclassified. Conclusion. The FTDS-SF may reduce administration time, while still yielding acceptable psychometric properties. Yet, caution needs to be executed in clinical decision making as the measure is overly specific.

Keywords: Aging, Proxy raters, decision support system, Automobile Driving, Fitness to drive

Received: 14 Sep 2018; Accepted: 02 Nov 2018.

Edited by:

Melody Goodman, New York University, United States

Reviewed by:

Danice B. Greer, University of Texas at Tyler, United States
Matthew H. Foreman, Methodist University, United States  

Copyright: © 2018 Classen, Medhizadah, romero and Lee. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Ms. Shabnam Medhizadah, University of Florida, Gainesville, 32611, Florida, United States,