TY  - JOUR
PY  - 2015//
TI  - Neuropsychological outcome and its correlates in the first year after adult mild traumatic brain injury: A population-based New Zealand study
JO  - Brain injury
A1  - Barker-Collo, Suzanne
A1  - Jones, Kelly
A1  - Theadom, Alice M.
A1  - Starkey, Nicola
A1  - Dowell, Anthony
A1  - McPherson, Kathryn
A1  - Ameratunga, Shanthi
A1  - Dudley, Margaret
A1  - Te Ao, Braden
A1  - Feigin, Valery
SP  - 1604
EP  - 1616
VL  - 29
IS  - 13-14
N2  - OBJECTIVE: The relationship between moderate/severe traumatic brain injury (TBI) and cognitive deficits is well known. The nature, duration and predictors of cognitive difficulties post-mild TBI remain unclear. This study examined cognitive, mood and post-concussion outcomes of mild TBI over 1-year post-injury. <br><br>METHOD: Adults (>15 years) with mild TBI (n = 260) completed neuropsychological (CNS-Vital Signs, Behavioural Dyscontrol Scale), mood (Hospital Anxiety Depression Scale) and behavioural assessments (Cognitive Failures Questionnaire, Rivermead Post-Concussion Questionnaire) at baseline, 1-, 6- and 12-months post-injury. <br><br>RESULTS: Over the 12-months post-injury self-reported cognition (p = 0.027), post-concussion symptoms (p < 0.001), depression (p < 0.001), anxiety (p < 0.001) and dyscontrol (p = 0.025) improved significantly. Assessments of memory, processing speed, executive function, psychomotor speed/reaction time, complex attention and flexibility also improved significantly. At baseline >20% of individuals produced very low scores on executive ability, complex attention and cognitive flexibility. At 1- and 6-month follow-ups >20% of participants were very low for complex attention, with 16.3% remaining so at 12-months. Executive abilities and speed were related to post-concussion symptoms, mood and self-reported cognition at 12-months. <br><br>CONCLUSIONS: Whilst significant improvements were noted across measures over time, a significant proportion of individuals still perform poorly on neuropsychological measures 12-months after mild TBI; and these were linked to post-concussion symptoms, mood and self-reported cognitive outcomes. This implies a longer trajectory for recovery than has previously been suggested, which has implications for provision of assessment and rehabilitation services for more extended periods.<p />  <p>Language: en</p>
LA  - en
SN  - 0269-9052
UR  - http://dx.doi.org/10.3109/02699052.2015.1075143
ID  - ref1
ER  -