Aim 1: Identify individual patient characteristics, including demographic data, severity of spinal cord injury, and severity of illness (complications and comorbidities), that explain significant variation in the outcomes of acute rehabilitation for SCI.

Aim 2: Identify medical procedures and therapy interventions, or combinations of procedures and interventions, that are associated with better outcomes, controlling for patient characteristics.

Aim 3: Determine whether specific impairment-by-treatment interactions are associated with better outcomes.