Rowe VT, Winstein CJ, Wolf SL, Woodbury ML. Functional Test of the Hemiparetic Upper Extremity: A Rasch Analysis With Theoretical Implications.
Arch Phys Med Rehabil 2017;
98:1977-1983. [PMID:
28434819 DOI:
10.1016/j.apmr.2017.03.021]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/22/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE
To investigate the measurement properties of the Functional Test of the Hemiparetic Upper Extremity (FTHUE) and examine how its score may or may not inform design of a rehabilitation program.
DESIGN
The FTHUE was recently used in the Interdisciplinary Comprehensive Arm Rehabilitation Evaluation randomized controlled trial. This circumstance provided the opportunity to examine the psychometric properties of the FTHUE as it pertains to contemporary poststroke rehabilitation and recovery models.
SETTING
Outpatient rehabilitation clinic.
PARTICIPANTS
Participants (N=109; mean age, 61.2±13.5y; mean days poststroke, 46±20.3) with resultant hemiparesis in the upper extremity.
INTERVENTIONS
Not applicable.
MAIN OUTCOME MEASURES
Dimensionality was examined with confirmatory factor analysis (CFA), and person and item measures were derived with Rasch item response analysis. Therapists' notes were also reviewed.
RESULTS
The CFA results support unidimensionality, and 16 of 17 items fit the Rasch model. The Rasch person separation (2.17) and item separation (4.50) indices, ability strata (3.22), person reliability (.82), and item reliability (.95) indicate good measurement properties. Item difficulties ranked from -6.46 to 3.43 logits; however, there was a substantial ceiling effect of person measures. Post hoc examination of therapists' written observations indicated that the scoring criteria are not sensitive to the movement strategy used for task completion.
CONCLUSIONS
The FTHUE's item difficulty hierarchy indicated that scores adequately distinguished the ability to perform simple versus complex motor movements of functional tasks. However, the FTHUE scoring method did not allow inclusion of the type of movement strategy used to accomplish task items. Therefore, we suggest modifications to the FTHUE that would allow it to be used for collaborative treatment planning and align well with more contemporary perspectives on treatment theory.
Collapse