A basic requirement for test and survey items is that they are able to detect variance with respect to a latent variable. To do this, an item scale must discriminate between test subjects and must have a systematic, clear and sufficiently strong relationship with the underlying construct. One possibility to examine the variability of an item is the computation of the relative information content. The relative information content (also called relative entropy) is a dispersion measure for at...
Some time ago I published the post you see below on LinkedIn. It was about a quantitative review where researchers evaluated the effects of interactive video games on functional balance and mobility in post-stroke individuals. In summary, Ferreira and colleagues came to the conclusion that interactive video games may lead to significant improvements on functional balance in individuals post-stroke. But are these findings really from clinical relevance?
A meta-analysis is a statistical analysis that combines the results of multiple scientific studies. The basic idea behind meta-analyses is that there is a common truth behind all conceptually similar scientific studies, but which has been measured with a certain error within individual studies. The aim then is to use approaches from statistics to derive a pooled estimate closest to the unknown common truth based on how this error is perceived. A key benefit of this approach is the aggregation...
Locomotion therapy is a key element of post stroke mobility rehabilitation. Intensive task-based gait training using an electromechanical gait trainer, such as the THERA-Trainer lyra, is at the forefront for patients unable to walk in the subacute phase. Electromechanical-assisted gait therapy has developed steadily over the past 20 years and is well documented.
The latest version of the Cochrane Review by Coralie English and colleagues at Newcastle University presents the findings. In the new version of the review, which was first published in 2010, the researchers considered 17 studies involving a total of 1.297 participants and compared circuit class therapy with conventional therapy in stroke patients.
+++ UPDATE 2018-10-07: Please also try the new ShinyApp! It has never been so easy to calculate statistical power in meta analyses... +++ You want to calculate statistical power of a meta-analysis in order to better interpret the results? Or maybe you are wondering if there is still a need for further research to underpin the results of an existing quantitative review? In this article I explain how you can calculate statistical power of fixed- and random effects model meta-analyses and what...
The probability of being able to walk independently again after stroke is vitally important for patients and their relatives. The ability to move independently determines the degree of autonomy in everyday life after rehabilitation and associated with this the necessary steps in planning a patient’s discharge from hospital.
Mirror therapy is an often used evidence-based therapeutical approach to improve motor function after stroke. During mirror therapy, a mirror is placed in the person’s midsagittal plane, thus reflecting movements of the non-paretic side as if it were the affected side.