Construct validation of the Hoensbroeck Disability Scale for Brain Injury in acquired brain injury rehabilitation

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Clinical Assessment

Background:

• Acquired brain injury (ABI) presents significant disability challenges.
• Accurate assessment tools are crucial for rehabilitation and patient management.
• The Hoensbroeck Disability Scale for Brain Injury (HDSB) is a potential tool for evaluating ABI-related disability.

Purpose of the Study:

• To determine the construct validity of the HDSB by comparing it with the established Disability Rating Scale (DRS).
• To assess the HDSB's ability to measure changes in disability over time in patients with brain injuries.

Main Methods:

• The HDSB and DRS were administered to 33 brain-injured patients during post-acute rehabilitation at admission, 6 weeks, and discharge.
• Correlations were calculated between HDSB and DRS scores at each time point.
• Longitudinal construct validity was examined by correlating changes in scores over time.
• Sensitivity to change was compared using effect sizes.

Main Results:

• HDSB subscales showed high correlations with the DRS at all assessment points, supporting concurrent validity.
• The correlation between changes in HDSB and DRS scores was moderate but in the expected direction.
• The HDSB demonstrated lower sensitivity to change over a 6-week period compared to the DRS.

Conclusions:

• The HDSB is a valid instrument for assessing the disability of acquired brain injury patients at a single point in time.
• The HDSB's utility in measuring longitudinal changes in disability requires further investigation.
• Future research should focus on refining the HDSB for tracking recovery and functional changes.