Study design and participant characteristics
The initial search identified 5,578 results. Twenty-seven studies were included in the review. Most studies (18/27) were randomised controlled studies. Figure 1
A total of 1726 participants with brain injury (958 stroke, 422 traumatic brain injury, 185 acquired brain injury, 158 head injury and 3 subarachnoid haemorrhage) were recruited across 27 studies. Studies were conducted in Australia, Canada, China, France, Netherlands, Norway, New Zealand, Taiwan, United Kingdom, and USA between 1999 and 2019. Recruitment rates of 42% − 94% were reported, however detail regarding recruitment methods was limited. Participant numbers and demographics were consistently well-reported. Dropout rates, of between 0 and 34%, were detailed by all studies. Five studies had complete adherence 24,26,34–36, the two studies with the highest dropout rate also had the largest sample sizes (202 and 204 16, 29). Where reported, the time from injury to recruitment ranged between 3 months and eight years. Seven studies utilised a facilitator manual 18,21,33,37–40 which would suggest enhanced fidelity of delivery, tailoring and modifications aimed at improving accessibility of resources were also reported.
Quality appraisal
The quality of included randomised controlled studies (RCTs) was assessed using the JADAD scale15. All RCTs scored ≥ 2 on JADAD scale. Almost all studies received a low score for blinding, 17/18 studies accounted for all participants and 12/18 of studies scored highly for randomisation. A summary of scores is shown in Table 1
Table 1
Intervention details
Overall, interventions were well described in accordance with the TIDieR checklist 41.
Most interventions were carried out in outpatient clinic or rehabilitation centre settings, with four being delivered at the participants home 17 ,18,20,21. Intervention duration ranged from 1 to 24 weeks and consisted of between 4 and 24 sessions.
Some studies focused specifically on areas such as fatigue, psychosocial functioning, memory, ongoing symptoms, and quality of life, with five interventions incorporated a goal setting approach28,33,36,37,43.
All studies included a psychoeducation component, of which the content, focus and delivery varied, with two also involving of an element of physical exercise. Two interventions were based on mindfulness therapy with a control group who received a programme of psychoeducation 16,32.
Interventions were delivered by a range of professionals, over half of those studies who provided detail were led by a psychologist, other disciplines included speech and language therapists, occupational therapists, advanced practice nurses, employment specialists, stroke nurses and peer dyads.
Twenty-two interventions were delivered face to face in group sessions, two of which had additional telephone sessions 31,40. Three were delivered in person, one to one 17,18,21, one was delivered either in a group, one to one or a combination of both 41 and one was delivered online 20.
Outcome Measures
Several different outcome assessment tools were used to measure the effect of the interventions, seven relating to fatigue with three studies using the Fatigue Severity Scale (FSS) 23,36,42, fourteen measured mood or emotional wellbeing ten of which administered the Hospital Anxiety and Depression Scale (HADS) 19,23–26,29,31,35,38,39 and eight to quality of life with 4 choosing to use the Stroke Impact Scale 22,34,40,42
Effectiveness of interventions
22/27 studies reported significant results16–19,21,22,23,24–29,32,33,34,36–39,42,43. 14 out of 17 RCT’s showed significance in favour of psychoeducation 16–19, 21,22,23,25–28,32,33,38. In the four studies that focused specifically on fatigue after brain injury, all 4 described significant improvements in fatigue23,25,35,40, however in one of the two randomised controlled studies both the intervention and control groups showed significant levels of improvement 23. Nine studies specifically aimed to target anxiety, depression and/or psychological distress 16,19,24,25,28,32,33,38,39, five of these showed significant results relating to these specific symptoms 28,32,33, 38,39, with one of the three randomised controlled studies noting significant results in both experimental and control groups33. One study which focused primarily on improving memory showed significant improvement in the intervention arm 21. 13/27 studies related to wider aspects of overall recovery 17,18,20,22,26,27,29–31,34,35,37,42, six of which showed significant improvement in areas such as quality of life, resilience, cognition, post-concussion symptoms, self-efficacy, and stroke knowledge 17,18,26,27,29,37. All the studies that were delivered with the use of a manual for facilitators (n = 2)17,22, participants (n = 2)21,38 or both (n = 5) 18,33,37,39,40 reported significant results.