An article claims that many medical patients have an instinctual ability to predict sudden changes in their medical status  But the evidence given is anecdotal and should not be trusted  The case is analogous to empirically disproven reports that babies are born in disproportionately high numbers during full moons
Once that rumor became popular, maternity room staff were more likely to remember busy nights with full moons than busy nights without them
babies are less likely to be born during a night with a full moon than during a night without a full moon