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Rehabilitation Outcomes

The Mayo-Portland Adaptability Inventory-4 (acronym MPAI-4) is a standard outcome measurement system that evaluates the functional limits of individuals who have an acquired brain injury.  The MPAI-4 assessment was originally created in the early 2000’s and is now in the 4th revision.  Rehabilitation providers across the nation, use MPAI-4 data to understand individual outcomes and to evaluate rehabilitation programs servicing individuals with a brain injury. 

Like many brain injury rehabilitation providers, the Lighthouse Inc. utilizes the MPAI-4 assessment to evaluate its brain injury program and the accomplishments of the individuals served. 

The MPAI-4 assessment provides functional measurements on multiple aspects of an individual’s recovery.  The MPAI-4 assessment evaluates a person’s:

  • Abilities - mobility, communication, memory, and problem-solving

  • Adjustment – anxiety, depression, anger, pain, and awareness

  • Participation – an individual’s ability to care for him/herself, to participate socially, work, manage leisure-time, manage money, and initiate or participate in activities


Recognizing that individuals with a brain injury have significant deficits or impairments – the MPAI-4 tells us how much the person’s impairment is affecting his/her daily life. The person’s outcome measurements are reported in T-scores. The T-score measures the variation of the impaired person’s level of functionality from a sample of healthy individuals.

The goal of all Lighthouse programs is for each person served to demonstrate improvement.  The MPAI-4 assessment measures the person’s progress and is indicated by a decrease of T-score; where the higher the T-score the greater the person’s impairment.

The Lighthouse assess the functional limits of two (2) groups of rehabilitation participants with a high level of complexity and severe functional limits.

  • Group 1 -- Intensive Rehabilitation Services (IRS): Participants registered as receiving 10 or more therapy services per week.

  • Group 2 – Long-Term Living Supports (LLS): Residents whose placement is considered long-term and require long-term living supports (LLS), with less than 10 hours of therapy per week.


The overall 2020 progress measurement for Group 1 and Group 2 are illustrated in the graphs above.  The reported measurements ratings are Admission to Discharge or Interval Rating to Interval Rating.

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