John Olver

Prof. John Olver

orcid

Research Focus & Metrics

Academic Career Length

36Years (1991-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 January 2014 in Journal of Neurotrauma
Verified
Journal Article
Closed access
JPJennie L. Ponsford
Jennie L. Ponsford
MDMarina G. Downing
Marina G. Downing
JOJohn Olver
John Olver
MPMichael Ponsford
Michael Ponsford
RARose Acher
Rose Acher
GSGershon Spitz
Gershon Spitz
The deleterious consequences of traumatic brain injury (TBI) impair capacity to return to many avenues of pre-morbid life. However, there has been limited longitudinal research examining outcome beyond five years post-injury. The aim of this study was to examine aspects of function, previously shown to be affected following TBI, over a span of 10 years. One hundred and forty one patients with TBI were assessed at two, five, and 10 years post-injury using the Structured Outcome Questionnaire. Fatigue and balance problems were the most common neurological symptoms, with reported rates decreasing only slightly during the 10-year period. Mobility outcomes were good in more than 75% of patients, with few participants requiring aids for mobility. Changes in cognitive, communication, behavioral, and emotional functions were reported by approximately 60% of the sample at all time points. Levels of independence in activities of daily living were high during the 10-year period, and as many as 70% of subjects returned to driving. Nevertheless, approximately 40% of patients required more support than before their injury. Only half the sample returned to previous leisure activities and fewer than half were employed at each assessment time post-injury. Although marital status remained stable over time, approximately 30% of participants reported difficulties in personal relationships. Older age at injury did not substantially alter the pattern of changes over time, except in employment. Overall, problems that were evident at two years post-injury persisted until 10 years post-injury. The importance of these findings is discussed with reference to rehabilitation programs.

1 January 1996 in Brain Injury
Verified
Journal Article
Closed access
JOJohn Olver
John Olver
JPJ. L. Ponsford
J. L. Ponsford
CCC. A. Curran
C. A. Curran
Thisstudy examined long-term outcomein traumatically brain-injured individualsfollowing discharge from a comprehensive rehabilitation programme. Of 254 traumatic brain injury (TBI) patients reviewed at 2 years, 103 have been followed up at 5 years using a structured interview format detailing neurological symptoms, mobility, independence in ADL, productivity status, relationship issues, communication and the presence of cognitive, behavioural and emotional changes. Visual difficulties, headache and fatigue were persistent in a significant number of patients. Between 2 and 5 years there was increased independence in personal, domestic and community ADL and the use of transport. Ten more patients had returned to driving. On the other hand there was a slightly higher incidence of cognitive, behavioural and emotional changes reported at 5 years. Thirty-two per cent of those working at 2 years were not employed at 5 years. Many students had also become unemployed. These findings suggest the need for intermittent lifelong intervention following TBI. Systems of rehabilitation need to be adapted to provide this.

1 January 1995 in Brain Injury
Verified
Journal Article
Closed access
PDF file
JPJ. L. Ponsford
J. L. Ponsford
JOJohn Olver
John Olver
CCC. Curran
C. Curran
A group of 175 traumatic brain injury (TBI) patients who had undergone intensive rehabilitation at Bethesda Hospital attended a follow-up interview 2 years after injury. The majority of patients had suffered severe TBI. Outcome was documented in ten areas: medical/physical, mobility, activities of daily living (ADLs) accommodation, marital status, leisure and recreation, employment/study, communication, cognition and behaviour. Whilst most patients were physically independent and competent in personal and domestic activities of daily living, a third of the group were still reliant on assistance with community skills and transport, and more than half of those who previously had a job, were not working at 2 years post-injury. Around two-thirds of the sample reported cognitive, behavioural and emotional changes. There is clearly a need for ongoing community-based support and assistance in dealing with practical difficulties and psychological problems as they are experienced after return to the community.

1 January 2003 in Brain Injury
Verified
Journal Article
Closed access
JPJennie Ponsford
Jennie Ponsford
JOJohn Olver
John Olver
MPMichael Ponsford
Michael Ponsford
RNRobyn Nelms
Robyn Nelms
Objectives : The present study aimed to examine long-term family and emotional adjustment in close relatives of individuals with TBI, who had access to comprehensive rehabilitation services. It also examined the relative influence thereon of factors including injury severity, handicap and cognitive and behavioural changes in the injured person, relationship with the injured person and caregiver status. Methods : Participants were 143 TBI individuals and their close relatives. They completed the Family Assessment Device (FAD), Leeds Scales of Anxiety and Depression, Structured Outcome Questionnaire, CHART, SIP Psychosocial Dimension and Novaco Anger Control Questionnaire 2-5 years post-injury. Results : Results showed that families were, on average, functioning in the normal range on the FAD. Anxiety and depression were more likely to be present in those responsible for care of their injured relative. There were no differences between spouses and parents. Presence of cognitive, behavioural and emotional changes was the strongest predictor of anxiety and depression in relatives and of unhealthy family functioning. Conclusions : Every attempt should be made to develop models of long-term support and care that alleviate these sources of burden on relatives.

1 January 1995 in Brain Injury
Verified
Journal Article
Closed access
PDF file
JPJ. L. Ponsford
J. L. Ponsford
JOJohn Olver
John Olver
CCC. Curran
C. Curran
KNK. Ng
K. Ng
The present study used a multivariate approach to investigate which of a range of variables relating to demographic factors, injury severity and degree of disability on admission to rehabilitation were the best predictors of employment status 2 years after traumatic brain injury (TBI). Subjects were 74 TBI patients who had been working prior to injury, had undergone rehabilitation at Bethesda Hospital and attended a review clinic 2 years after injury. A cross-validation sample consisted of a further 50 such subjects. Following preliminary analysis four input variables were selected: age under or over 40 at time of injury, Glasgow Coma Scale score on acute hospital admission, duration of post-traumatic amnesia and total score on the Disability Rating Scale (DRS) on admission to rehabilitation. Stepwise discriminant function analysis resulted in a discriminant function consisting of three variables—total score on the Disability Rating Scale, Glasgow Coma Scale Score and age—which correctly classified 74% of grouped cases. A second analysis using the original discriminant function correctly classified 68% of the cross-validation sample. Chi-square analysis showed no significant difference between these results, thus confirming these variables, in combination, as predictors of employment status 2 years after TBI.

4 January 2011 in International Journal of Stroke
Verified
Journal Article
Open access
MBMichael Brainin
Michael Brainin
BNBo Norrving
Bo Norrving
KSKatharina Stibrant Sunnerhagen
Katharina Stibrant Sunnerhagen
LGLarry B. Goldstein
Larry B. Goldstein
SCSteven C. Cramer
Steven C. Cramer
OGon behalf of International PSS Disability Study Group
on behalf of International PSS Disability Study Group
This paper represents the opinion of a group of researchers and clinicians with an established interest in poststroke care and is based on the recognised need for long-term care following stroke, especially in view of the global increase of disability due to stroke. Among the more frequent long-term complications following stroke are spasticity-related disabilities. Although spasticity alone occurs in up to 60% of stroke survivors, disabling spasticity affects only 4–10%. Spasticity further interferes with important functions of daily life when it occurs in association with pain, motor impairment, and overall declines of cognitive and neurological function. It is proposed that the aftermath of stroke be considered a chronic disease requiring a multifactorial and multilevel approach. There are, however, knowledge gaps related to the prediction and recognition of poststroke disability. Interventions to prevent or minimise such disabilities require further development and evaluation. Poststroke spasticity research should focus on reducing disability and be considered as part of a continuum of chronic care requirements and should be recognised as a part of a comprehensive poststroke disease management programme.