This application web is based on a research paper* and it offers the factor loading of each item of the NDI Questionnaire** and normalized scores from Confirmatory Factor Analysis of 1333 participants. A new model proposed, which is that of a single-factor structure and the use of a single cumulative score. The proposed model is determined from a general population and from both gender and a specific whiplash associated disorder (WAD) subgroups.
This research was partially funded by grants from the OTRI-UMA (8.06/5.42.3064-1) and grants from the Spanish Ministry of Education (JC2009-0047)