Minimal Clinically Important Difference for the Rasch Neuropsychiatric Inventory Irritability and Aggression Scale for Traumatic Brain Injury
| dc.contributor.author | Malec, James F. | |
| dc.contributor.author | Hammond, Flora M. | |
| dc.contributor.department | Physical Medicine and Rehabilitation, School of Medicine | en_US |
| dc.date.accessioned | 2017-11-10T18:16:28Z | |
| dc.date.available | 2017-11-10T18:16:28Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | Objective To determine the minimal clinically important difference (MCID) for a Rasch measure derived from the Irritability/Lability and Agitation/Aggression subscales of the Neuropsychiatric Inventory (NPI)—the Rasch NPI Irritability and Aggression Scale for Traumatic Brain Injury (NPI-TBI-IA). Design Distribution-based statistical methods were applied to retrospective data to determine candidates for the MCID. These candidates were evaluated by anchoring the NPI-TBI-IA to Global Impression of Change (GIC) ratings by participants, significant others, and a supervising physician. Setting Postacute rehabilitation outpatient clinic. Participants 274 cases with observer ratings; 232 cases with self-ratings by participants with moderate-severe TBI at least 6 months postinjury. Interventions Not applicable. Main Outcome Measure NPI-TBI-IA. Results For observer ratings on the NPI-TBI-IA, anchored comparisons found an improvement of 0.5 SD was associated with at least minimal general improvement on GIC by a significant majority (69%–80%); 0.5 SD improvement on participant NPI-TBI-IA self-ratings was also associated with at least minimal improvement on the GIC by a substantial majority (77%–83%). The percentage indicating significant global improvement did not increase markedly on most ratings at higher levels of improvement on the NPI-TBI-IA. Conclusions A 0.5 SD improvement on the NPI-TBI-IA indicates the MCID for both observer and participant ratings on this measure. | en_US |
| dc.eprint.version | Author's manuscript | en_US |
| dc.identifier.citation | Malec, J. F., & Hammond, F. M. (2017). The Minimal Clinically Important Difference for the Rasch Neuropsychiatric Inventory Irritability and Aggression Scale for Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation. https://doi.org/10.1016/j.apmr.2017.06.038 | en_US |
| dc.identifier.uri | https://hdl.handle.net/1805/14499 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.relation.isversionof | 10.1016/j.apmr.2017.06.038 | en_US |
| dc.relation.journal | Archives of Physical Medicine and Rehabilitation | en_US |
| dc.rights | Publisher Policy | en_US |
| dc.source | Author | en_US |
| dc.subject | aggression | en_US |
| dc.subject | behavior | en_US |
| dc.subject | brain injuries | en_US |
| dc.title | Minimal Clinically Important Difference for the Rasch Neuropsychiatric Inventory Irritability and Aggression Scale for Traumatic Brain Injury | en_US |
| dc.type | Article | en_US |