Randomization and allocation
Randomization had to consider practical organization in which students participated at different times in batches of nine, 12, or 15 students; therefore, separate computer-generated randomization lists were made for each batch of students using the Microsoft Excel RAND function. Using these lists, stickers with identification (ID) numbers and allocation codes were printed. The stickers were then put in separate containers for each batch.To allocate students into the intervention and control groups, students in the same batch got a random ID sticker from the container. Depending on the site, one ID sticker was taken out of the container and given to the student upon entering the lecture room (one site) or the stickers were given to the students after the students were seated in the lecture room (two sites). In the first case, the order the students came to the room could not be influenced and were random, and in the second case, the ID stickers were drawn from the container to ensure random order. The students wore the ID stickers visibly to allow for inspection and ensure that they participated according to allocation. The students were informed that they would be divided into two different groups that would self-practice using the ISBAR approach after the introduction, when the participants were followed to their simulation sites based on the allocation code on their ID stickers. The allocation on each ID sticker was checked again when students entered their designated sites. No errors were reported.