 Good morning, good afternoon and good evening everyone. My name is Katyn Santos, and I'm an undergraduate student of Speech, Language, and Hearing Sciences at the Federal University of Rio Grande do Not, located in Brazil. And it's a pleasure to be here to present our abstract and titled Digitinois Test in Brazilian Portuguese Preliminary Study in School Children. This study was developed by the Laboratory of Technological Innovation and Health from the same university. The Digitinois Test is a widely used hearing screening tool known for its multiple benefits, such as being low-cost, easy to apply, and an accessible technology. This characteristics makes it a excellent option for large-scale screenings, such as those conducted in schools. Hearing loss can significantly impact school children, leading to reduced school performance, decreased sociability, and cognitive decline. So this study aims to verify the performance of school children in the Digitinois Test in Brazilian Portuguese. But, how does the Dintas work? In our study, the Dintas was conducted using a smartphone and earphones. The participants listened to 23 sequences of digit triplets draw in white noise. And then, while listening to the digits, they had to identify these sequences on the smartphone's number pad. The noise level variation occurred according to the responses of the school children in an adaptive way. And at the end of the test, the digit recognition threshold was automatically generated by the average of correct answers. And there are two main ways to perform the Dintas. The Diotic mode, where the stimuli and the noise level were generated. The Diotic mode, where the stimuli are presented in identical phase in both years. And the Anti-Phasic mode, where the stimuli are presented in opposite phase between years. A total of 87 school children from 8 to 16 years old from a public school in Northeast Brazil participated in this study. They were previously evaluated with pure tone auditory thresholds at frequencies of 1, 2 and 4 kHz. And also, with timpometry. And before the Dintas, they were submitted to a screening test for visual recognition of numbers. To verify if they were able to visually recognize the numbers that they heard in the test. And all the subjects performed both Diotic and Anti-Phasic modes often in randomized order. And then the participants were divided into five groups based on the results of the previously hearing screening procedures. The group 1 to group 4 from better towards audiometric thresholds, all of them with type 8 timpometry bilaterally. And the group 5 consisted of the participants with timpometric alterations. For the statistical analysis, we use it the Shapiro-Wilkes test to assess data normality, followed by the Krusko-Wallis test to compare the results between groups. And the Wilkeson test to compare the results between modes. The significance level was set at 5%. During our analysis, we observed that the data did not show normal distribution. We also identified variations in performance between the Diotic and Anti-Phasic modes among different groups of school children. Firstly, the groups 1, 2, and 3 showed a better performance in the Anti-Phasic mode when compared to the Diotic mode. On the other hand, the groups 4 and 5 presented a similar performance in both DIN modes. When comparing groups, we found a significant difference between the group 4 with group 3 and 5 in both modes of DIN. Similarly, the group 4 also showed a significant difference with the group 2, but only in the Anti-Phasic mode. So, to summarize, our findings indicated that the DIN test had a better signal-to-noise ratio in the Anti-Phasic mode in school children with less hearing loss. We also found that the Anti-Phasic mode differentiated the groups with greater hearing loss from those with less severe hearing loss and also those with conductive components. And we intend to analyze other environmental and biological variables and confirm the influence of the degree and type of hearing loss in the results of the DIN test. So, that's all. Thank you for watching and also thanks to the VCCA organizers. I sincerely appreciate the opportunity to be here and share some insights into the advancements in audiology in Brazil. Also, a special thanks to Federal University of Paraíba, University of Sao Paulo, and here X that are collaborators in the development of the DIN test in Brazil and Portuguese. That's my email, so if you have any questions or would like to further discuss this study, feel free to contact me.