Introduction: Global rating of change (GROC) scale is meant for self-measured assessment regarding overall change in health condition. It enables the patients to assess their overall change in health condition while combining all their recollection regarding pain, improvement of physical, emotional state and unwanted effects into a unified measurement of their perception regarding advantages and disadvantages of the treatment they have experienced. It requires patients to compare their current state with that at the beginning of the treatment and to evaluate whether a change occurred and in what extent. Purpose: The purpose of diploma thesis is overview and comparison of already conducted researches that focused on measuring properties of 11- and 15- point global rating of change scales for wholesome change. Methods: Research was done on online databases PubMed (MEDLINE) and Web of Science. Literature cited in this paper was gathered by the end of March 2019. The searches were conducted in English language, regardless of year of the publishing of the papers. Results: There are a total of seven researches included in this paper, published between 2001 and 2016. In three of those they were examining the properties of 11-point scale, in two 15-point scale and in two the validity of the 15-point scale in correlation with the length of the patients treatment. Good-to-great reliability was found in test re-test of the 11-point scale (ICC = 0.78–0.90) and moderate reliability was found in the test re-test of the 15-point scale (ICC = 0.69). High face validity (r = 0.82) and good sensitivity was found for the 15-point scale for measuring clinical changes while only moderate-to-good sensitivity was observed in the 11-point scale for measuring clinical changes. In neither of the scales any floor or ceiling effects were noticed. The correlation between 15-point GROC scale and change of functionality for knee, hip, ankle or feet were higher, but still in the low region (0.47–0.51) even for the shortest interval (up to 30 days), the results however were even lower in longer time intervals. Conclusion: Global rating of change scale is only applicative in the treatments that last up to a month. Due to founding of better reliability of retesting and better sensitivity, we would recommend usage of the 11-point scale for wholesome rating of change.
|