I don't know any statistics on this, but I do know that my DH tested positive and was sent for more tests, which showed that he had a tumour in his bowel. He had in fact been having other symptoms but (just like a man) he thought they were normal.
A year before he received his kit, I received mine, which did not have any nasty results. Now, had his been the earlier one, perhaps his tumour would have been detected before it spread, and I would not have had to organise his funeral two weeks ago. That may not be economically viable, but it would have made me very much happier.
Do not bin it. Grit your teeth and get scraping with the little spatula. It could save your life