The factorial validity and internal consistency of the Instrumental Activities of Daily Living Profile in individuals with a traumatic brain injury

• Published in: Neuropsychological rehabilitation 2009-04, Vol.19 (2), p.177-207
• Main Authors: Bottari, Carolina, Dassa, Clément, Rainville, Constant, Dutil, Élisabeth
• Format: Article
• Language: English
• Subjects: Activities of Daily Living; Adolescent; Adult; Adult and adolescent clinical studies; Aged; Biological and medical sciences; Brain injuries; Brain Injuries - psychology; Brain Injuries - rehabilitation; Ecological assessments; Executive function; Executive functions; Factor analysis; Factor Analysis, Statistical; Female; Humans; Injuries of the nervous system and the skull. Diseases due to physical agents; Male; Medical sciences; Middle Aged; Neuropsychological Tests; Occupational Therapy - methods; Organic mental disorders. Neuropsychology; Psychology. Psychoanalysis. Psychiatry; Psychometrics. Diagnostic aid systems; Psychopathology. Psychiatry; Rehabilitation; Reproducibility of Results; Techniques and methods; Traumas. Diseases due to physical agents; Traumatic brain injury; Young Adult
• ISSN: 0960-2011; 1464-0694
• DOI: 10.1080/09602010802188435

The objective of the study was to investigate the factorial validity and internal consistency of the Instrumental Activities of Daily Living (IADL) Profile. A group of 96 patients aged 16 to 65 years, with moderate to severe traumatic brain injuries, was recruited from 12 rehabilitation hospitals in Quebec. The IADL Profile was administered by an occupational therapist in each subject's home and community environment. Principal axis factoring and confirmatory factor analysis provide preliminary support for six correlated factors (F): (F1) going to grocery store/shopping for groceries, (F2) having a meal with guests/cleaning up, (F3) putting on outdoor clothing, (F4) obtaining information, (F5) making a budget, (F6) preparing a hot meal for guests. Total explained variance was 73.6%. Cronbach's alpha analysis revealed high to very high internal consistency for all scales ranging from .81 to .98; internal consistency of the total scale was very high (0.95). The findings suggest that the IADL Profile is a promising means of documenting both IADL independence and the repercussions of executive function deficits on everyday tasks in real-world environments.