Examine test-retest reliability of a Swedish version of the Eyes Test.
Methods: A Swedish translation of the child version of the Eyes Test consisting of 24 items was used. Participants were 58 students (33 female and 25 male) at the University of Karlstad. The test was given twice at an interval of three weeks. To examine the test-retest reliability we used the Bland Altman method to measure the limits of agreement. This is a statistical method designed to examine the agreement between two test methods or the repeatability of a method. Using this statistical method it is possible to both visualize and calculate the agreement between two test times.
Results: The limits of agreement was ± 4.3
Conclusions: When the Eyes Test is used, either in research or clinical practice, one has to take into account that an obtained test score must be regarded as an approximation. A test score variation in the range of ±4 (out of 24 possible) is to be expected for the same individual. However, there was no indication of learning effects when the test was repeated.