1. Validity and Reliability of the Perceived Deficit Questionnaire to Assess Cognitive Symptoms in People With Chronic Whiplash-Associated Disorders 
Hiroshi Takasaki, MSc, Chi-Wen Chien, PhD, Venerina Johnston, PhD, Julia Treleaven, PhD, Gwendolen Jull, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 93, Issue 10, Pages (October 2012)
DOI: /j.apmr
Copyright © 2012 American Congress of Rehabilitation Medicine Terms and Conditions

2. Fig 1
Item-person maps of the PDQ with step thresholds of the 5-point rating scale measures. Higher positive values indicate people with more cognitive disability and more frequent cognitive complaint items. * indicates that 1 item has been removed from the section, and each X indicates 1 participant.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2012 American Congress of Rehabilitation Medicine Terms and Conditions