Developing Item Response Theory-Based Short Forms to Measure the Social Impact of Burn Injuries

Publication date: Available online 6 September 2017
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Molly Marino, Emily C. Dore, Pengsheng Ni, Colleen M. Ryan, Jeff C. Schneider, Amy Acton, Alan M. Jette, Lewis E. Kazis
ObjectiveTo develop self-reported short forms for the LIBRE Profile.DesignParticipants were selected for inclusion in the short forms based upon the item parameters of discrimination and average difficulty. Test information function, as well as floor and ceiling effects, were evaluated for both the full item bank and the short forms.SettingParticipants were recruited were from the Phoenix Society (a support network for burn survivors), peer support networks, social media, and mailings.Participants601 burn survivors over 18 years of age in North America.InterventionsnoneMain Outcome MeasuresThe LIBRE-ProfileResultsTen-item short forms were developed to cover the six LIBRE Profile scales: Relationships with Family & Friends, Social Interactions, Social Activities, Work & Employment, Romantic Relationships, and Sexual Relationships. Ceiling effects were ≤15% for all scales; floor effects were all <1%. The marginal reliability of the short forms ranged from 0.85-0.89.ConclusionsThe LIBRE Profile-Short Forms demonstrated credible psychometric properties. The short form version provides a viable alternative to administering the LIBRE Profile when resources do not allow for computer/internet access. The full item bank, Computerized Adaptive Test, and short forms are all scored along the same metric and therefore scores are comparable regardless of mode of administration.



http://ift.tt/2j4kuuq