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How Do Intensity and Duration of Rehabilitation Services Affect Outcomes From Severe Traumatic Brain Injury? A Natural Experiment Comparing Health Care Delivery Systems in 2 Developed Nations

Published:August 03, 2016DOI:https://doi.org/10.1016/j.apmr.2016.07.012

      Abstract

      Objective

      To determine the effects of inpatient and outpatient treatment intensity on functional and emotional well-being outcomes at 1 year after severe traumatic brain injury (TBI).

      Design

      Prospective, quasiexperimental study comparing outcomes in a U.S. TBI treatment center with those in a Denmark (DK) center providing significantly greater intensity and duration of rehabilitation.

      Setting

      Inpatient and outpatient TBI rehabilitation.

      Participants

      Persons with severe TBI (N=274).

      Interventions

      Inpatient rehabilitation interventions were counted daily by discipline. Outpatient treatments were estimated per discipline using a structured interview administered to patients, caregivers, or both, at 12 months.

      Main Outcome Measures

      FIM, Glasgow Outcome Scale–Extended, Disability Rating Scale, Participation Assessment with Recombined Tools–Objective, Perceived Quality of Life, Medical Outcomes Study 12-Item Short-Form Health Survey, Brief Symptom Inventory–18-item version.

      Results

      Despite identical inclusion criteria, patient severity on admission was greater at the DK site. After adjustment for patient/injury characteristics, there were no site differences in either functional or emotional outcome at 12 months. Significantly more inpatient plus outpatient treatment was administered to DK patients than to those in the U.S. For functional but not emotional treatments, more severely impaired patients received higher doses. One-year outcomes were predicted by admission severity, age, employment, and other baseline characteristics.

      Conclusions

      Contrary to expectation, DK patients who received significantly more rehabilitation services during the year after severe TBI did not differ in outcome from their less intensively treated U.S. counterparts, after adjusting for initial severity. The negative association of functional treatment dose with extent of early disability suggests that dose was driven by unmeasured factors reflecting need for services. Improved measures of injury-related factors driving treatment allocation are needed to model the independent effects of treatment on outcomes.

      Keywords

      List of abbreviations:

      BSI-18 (Brief Symptom Inventory–18-item version), DK (Denmark), DRS (Disability Rating Scale), GOS-E (Glasgow Outcome Scale–Extended), PART-O (Participation Assessment with Recombined Tools–Objective), PQOL (Perceived Quality of Life Scale), SF-12 (Medical Outcomes Study 12-Item Short-Form Health Survey), TBI (traumatic brain injury), TFC (time to follow commands)
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