I’m currently training a ML model that can estimate sex based on dimensions of proximal femur from radiographs. I’ve taken x-ray images from ALL of the samples in the osteological collection in Chiang Mai, left side only, which came to a total of 354 samples. I also took x-ray photos of the right femur and posterior-anterior view of the same samples (randomized, and only selective few n=94 in total) to test the difference, dimension wise. I have exhausted all the samples for training the model and validating (5-fold), which results in great accuracy of sexing. So, I am wondering whether it is appropriate to test the models with right-femur and posterior-anterior view radiographs, which will then be flipped to resemble left femur x-ray images, given the limitations of our skeletal collection?

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