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PASSED

Congratulations, you are cancer free!

This is a fake application used to illustrate the importance of statistics. This app will ALWAYS return "passed" as the result, and should not be used as medical advice or to determine your current cancer status or risk.

Canada has a current population of ~40 million people, with roughly 230,000 people estimated to be diagnosed each year. Going off a one-year interval (which I'm well aware is not perfect, people can suffer for years), that leaves us with a 0.00575% cancer rate for the entire population. This means that 23 out of every 4000 people will currently be diagnosed with cancer.

This also means that If I were to create a fake app that tests for cancer, but have it always return "pass" (as in, no cancer found), this app would have a 99.99425% success rate, and is a great example of why something that is "99.9%" accurate really doesn't mean much as it will still have an unacceptable amount of false positives/negatives.