Dear gergely_batho, First of all, thank you for your quick response. I was looking for a way to use proc corr because it is already optimized and all the details (sorting, ranking and treatment of ties) are already implemented. It´s a good idea to write the calculation myself and I'm considering it, but that would require in my case a validation of this procedure by a third party extending significantly the time of this project. I've never worked with the dusubl() function, so I'll give it a try. Thank you! Best Regards, Davi Laraia
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