It is exactly what I am describing. In any test you will have false positives. Then the broader you test the more false positives you get. This was also a thing during Corona in Germany. At the start of the pandemic only people with symptoms should get tested, because with low case number and even a very good test and test procedure you can easily get more false positives than true positives. This is true for every test where true positives are rare. The math is pretty simple here.
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Cake day: June 13th, 2023
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Isn‘t autism and many other psychological conditions under and over diagnosed at the same time? A friend of mine got her diagnosis at the age of 31 (under diagnosed) and her doctor talked with her about social media bringing more people to her, which think they have autism, but don‘t (over diagnosing).
I don‘t want to talk anyone out of their diagnosis or give them doubts. As long as there are tests there will always be false negatives and positives and so if you test more it will influence the outcome.
PS: The article is probably bullshit.
Good example. It‘s not only about how many people take a test, but also if the test is taken multiple times. Then you are in realm of statistics.
Probably to find the true result would be to consult those earlier doctors with the diagnosis of that last doctor. They might have missed something (or not).