The association of traumatic brain injury with rate of progression of cognitive and functional impairment in a population-based cohort of Alzheimer's disease: the Cache County Dementia Progression Study.

Background: There is limited research on factors that influence the rate of progression in Alzheimer's disease (AD). A history of traumatic brain injury (TBI) is associated with an increased risk for AD, but its role on the rate of dementia progression after the onset of AD has not been examined.

Methods: A population-based cohort of 325 persons with incident AD was followed for up to 11 years.

Positive psychological variables in the prediction of life satisfaction after spinal cord injury.

Objective: To examine relationships between select positive psychological variables and life satisfaction in persons with spinal cord injury during acute rehabilitation and 3 months after discharge.

Design: Prospective observational design; correlational and regression analyses. Eighty-seven adults who were participating in in-patient, acute rehabilitation for spinal cord injury in two metropolitan hospitals completed the following measures: Benefit finding Scale, Hope Scale, Brief Symptom Inventory, COPE, Positive and Negative Affect Schedule, and Satisfaction with Life Scale.