Related Experiment Video
Updated: Feb 9, 2026

Randomized, Triple-Blind, and Parallel-Controlled Trial of Transcranial Direct Current Stimulation for Cognitive Rehabilitation after Stroke
Published on: June 6, 2025
Determining the feasibility and preliminary efficacy of a stroke instructional and educational DVD in a multinational
Kelly M Jones1, Rohit Bhattacharjee1, Rita Krishnamurthi1
11 National Institute for Stroke and Applied Neurosciences, Auckland University of Technology, Auckland, New Zealand.
Objective:
To assess the feasibility of conducting a randomized controlled trial of an instructional and educational stroke DVD and determine the feasibility and preliminary efficacy of this intervention in a multinational context.
Design:
Non-funded, pilot randomized controlled trial of intervention versus usual care.
Setting:
International, multicentre, community-based.
Participants:
Community-living adults up to three years post stroke with moderate to severe disability and their nominated informal caregivers.
Interventions:
Intervention patients viewed and practised rehabilitation techniques demonstrated in the DVD over six weeks.
Main Measures:
Trial feasibility by number of active recruitment sites, recruitment efficiency, randomization and follow-up. Intervention feasibility by patient and caregiver impressions. Preliminary efficacy by the quality of life - 5-level EuroQol-5D (EQ-5D) health status measure, General Health Questionnaire and Centre for Epidemiological Studies-Depression at two months.
Results:
In total, 14 recruitment sites were established across eight countries. Recruitment was achieved at nine (64%) sites. Over 16 months, 66 participants were recruited (mean (SD) age = 63.5 (12.47) years) and randomized to intervention ( n = 34) and control ( n = 32) groups. In total, 54 (82%) completed a follow-up assessment. Patient and/or caregiver comments about the benefits and barriers to accessing the intervention were mixed. There were no significant between-group differences in outcomes at two months ( P > 0.05).
Conclusion:
Conducting a multinational trial of a stroke DVD requires full funding. The intervention was acceptable to some patients and their caregivers, yet a generalized education approach did not fully meet their needs and/or expectations. A more individualized method may be required to meet peoples' changing needs during stroke recovery.
Related Concept Videos
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
Pilot and Numeric Relaying
Self Within Cultural Contexts
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
Self-Efficacy
Random Error

