Only two of the six studies explicitly based their intervention on theory, and future studies should seek to identify and utilise appropriate theories in intervention development.
Physiotherapists also have profound knowledge on how the disabilities associated with CP, i.e. problems in sensory-motor development and the development of cognitive functions, contribute to the child's ability to perform the task in the environment, and they should therefore base their research interventions on this knowledge [ 28].
In making initial observations and taking the most rudimentary of medical histories, health service professionals base their understanding and interventions on these differences.
Secondly, we postulate that PTs base their diagnosis and interventions on imaging techniques that were performed in the past; moreover, in case of the inter-rater reliability study, this could threaten blinding because most patients know the results of diagnostic imaging.
They spend their days in the classroom delivering lessons, in advising and planning sessions with all students, and group and individual counseling with some students, and team and collaborate with all adult stakeholders using data to ensure that they can demonstrate how all students have improved based on their interventions.
Although the studies evaluated in systematic reviews can be any kind of research [ 2], reviewers of the effects of health care interventions tend to base their reviews on Randomized Controlled Trials (RCTs), when possible, as they are one of the most rigorous study designs [ 3].
While a recent paper by researcher David Booth explores what he coins 'an arms-length approach to aid', referring to organisations that operate at a distance from their funders and have the flexibility to shape their interventions based on the demands of recipient governments.
These results can be used by researchers and relevant authorities to customize their interventions based on previous, well-structured knowledge of various stakeholders' priorities.
In addition, the same items were costed differently across the three studies, mainly based on their intervention and context-specificity.
