Introduction.

The MIR exam is the test that allows access to specialized medical training in Spain. Its objective is to distribute the available places for the different medical specialties among Medicine graduates, taking into account both their record and the results of the test. Taking a test exam has a certain element of randomness.

Objectives.

Analyze the performance of the number ones of the 2021-2022 and 2022-2023 calls throughout their preparation, as well as know what results they could obtain if they repeated the same exam one million times.

Material and methods.

Information related to the performance of the students who prepared the tests with MIR Asturias Intensive Courses was used, as well as the principles of item response theory.

Results.

In 11 (33.3%) and 14 (42.4%) of the 33 tests carried out throughout the preparation, number one was classified among the top 10. From the simulations of the 2022 and 2023 MIR tests, it was obtained that the first classified in 2022 would be among the top 185 in the test and in 2023 among the top 92.

Conclusions.

To obtain an order number among the first classified it is necessary to have a high ability, which is achieved through solid preparation. In addition, randomness has a certain level of influence on the results of the opponents presented to the test.

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