Abstract
To conduct high-level intervention studies, it is necessary to set up a control group, which presents ethical difficulties. Therefore, in this study, we decided to construct a data pool for calculating the propensity score of the recovery period in 214 upper limb paralysis after stroke by retrospectively extracting data that was conducted as an evaluation in general clinical practice. We also report the results of propensity score matching in which data from previous and subsequent comparative studies that did not use control groups performed by the author as an intervention group was used as an example of data usage. By sharing the data of this study with many researchers and clinicians and using it as a control group, we can improve the accuracy of clinical studies.
