Article

OBJECTIVE: To establish generalizability estimates of the Instrumental Activities
of Daily Living (IADL) Profile when administered to persons with a moderate or
severe traumatic brain injury (TBI) within their home and community environment.
DESIGN: Generalizability theory was used to estimate generalizability and
dependability coefficients as well as the relative contribution of identified
sources of measurement error to total measurement error. Decision studies were
used to enable the investigators to determine the optimal measurement design.
SETTING: The IADL Profile was administered in subjects' homes and community
environments. PARTICIPANTS: Convenience sample of adults with a moderate or
severe TBI (N=30, aged 16-65y). INTERVENTIONS: Not applicable. MAIN OUTCOME
MEASURES: IADL Profile scores include 6 factor scores (going to the grocery
store/shopping for groceries, having a meal with guests/cleaning up, putting on
outdoor clothing, obtaining information, making a budget, and preparing a hot
meal) and 1 total score. RESULTS: The greatest sources of measurement error were
the subject-item interactions (3-random-facet design) and the subject-rater
interactions (2-random-facet design). One hundred percent of generalizability
coefficients of factor scores indicated acceptable to excellent reliability.
Indices of dependability confirmed that 1 evaluator could reliably score the tool
on a single occasion after having received a 3-day training workshop.
CONCLUSIONS: The IADL Profile administered to persons with a moderate or severe
TBI provides occupational therapists with a reliable set of measures of IADL
independence capable of both capturing and analyzing the complex interactions
between personal and environmental factors.

Langue : ANGLAIS