Why "test for Alzheimer's effectiveness needle felting 90%" in 92% of cases will give a bad result - Wykop.pl needle felting
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A few days ago there were reports about the development of a test that a blood test would have a 90% certainty predict the appearance of the disease. Unfortunately, such screening, even with high efficiency, have a deceptive ailment.
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@ Ukradli_mi_strimsa: It's needle felting like this: the effectiveness of test 90 means as much (though not always, errors needle felting in both parties do not have to be equal!) That the test has a 10% chance needle felting that it will not detect future disease (false negative) and 10% chance of that detect patients who do not have the disease (false needle felting positive). If the incidence of Alzheimer's is 1%, then the test population of 1,000 people - will recommend nine people who actually will this have Alzheimer's - not single out one man who had Alzheimer's will - detect Alzherimera in 10% of 990 = 99 people who Alzherimera have not What it means that only 8% of the tests that are correct people actually become sick. This is true for all tests, including those 99.9% - which is why you have to be very careful when test stems legal consequences - hence such tests for drugs to be repeated by another method in order to condemn the "stoned" driver - because In many cases, a positive test is a false positive # show comment needle felting Shaki 1 week ago 32
@ Ukradli_mi_strimsa: In short: The discovery is given a simple example, a problem associated with such tests - take a group of 1,000 people, found that 1%, or 10 people will develop Alzheimer's disease within three years. Test detects nine of them, just in case one is negative. So far it is good. The problem is that spośrób the rest of the 990 people who will develop Alzheimer's NOT in the next three years, will test 99 false positives. So we have a total of 108 positive results, of which only 8% of people, needle felting about one in ten, actually ill with Alzheimer's. Man assumes that the test has 90% efficiency, which is down to earth if detected - that is almost certainly that's needle felting true, when in fact if your result is positive, it is likely that you will be sick of only 8%. # Show comment Shaki 1 week ago 4
[Comment deleted] show comment ukradli_mi_strimsa 1 week ago 0 @ telpeloth: @ Shaka: Thanks This is true for all tests, including those 99.9% - which is why you have to be very careful when test stems legal consequences - hence such . tests for drugs to be repeated by another method in order to condemn the "stoned" driver needle felting - because in many cases a positive test is a false positive @ telpeloth: This error HIV testing and paternity (the genetic) also affected? # Show comment telpeloth 1 week ago 14
@ Ukradli_mi_strimsa: Yes, any test can have false-positive errors and false-negative. But you have to take into account that a paternity test is a simple test is not a yes / no. In the case of paternity tests done PCR from a dozen different pieces of DNA. The test can not tell the degree of kinship, but about the similarity of DNA, which may mean that if your child does your wife's brother, the test does not detect the difference between you - the thing is quite complicated, my wife, who is a doctoral needle felting student of biology and knows how to carry PCRy said that if the test shows a relationship, it is very certain, if she shows no - it's almost a hundred percent certain. # Show comment dzikireks 1 week ago +2
@ Ukradli_mi_strimsa: the problem is the large number of false pozytywnywch, and the term "90% needle felting effectiveness" refers only to the detection of the real thing. It is an affliction of many diagnostic tests that are worthless when the show too much falsely positive. For example, imagine that you are going to check out if you have HIV: a test with 90% efficiency, will pick up more than 90% of cases where someone has hiva, so chances are that you have hiva, the test will tell you that you do not have are like 1 10, which are small. THIS well, because as you are sick, it is detect. But the problem begins when the test has a large quantity of false positive indications, which indicates the presence of the disease in people who are not sick. That's just thi bad because a lot of people completely healthy survive the shock, seeing the results. The ideal situation is when the test detects all infections and has few false indications pozytwywnych. This test for Alzheimer's, however, has a lot of falsely positive, which puts into question its usefulness. # Show comment Dekapitator 1 week ago 0
@ Telpeloth: needle felting It's like
close the site uses cookies to deliver services in accordance with the Policy Files Cookies. You can specify the conditions for storage or access cookies on your browser. Wykop.pl excavation (271) Best Microblog
A few days ago there were reports about the development of a test that a blood test would have a 90% certainty predict the appearance of the disease. Unfortunately, such screening, even with high efficiency, have a deceptive ailment.
To take full advantage of the new features enable JavaScript or change the browser to one that supports it.
@ Ukradli_mi_strimsa: It's needle felting like this: the effectiveness of test 90 means as much (though not always, errors needle felting in both parties do not have to be equal!) That the test has a 10% chance needle felting that it will not detect future disease (false negative) and 10% chance of that detect patients who do not have the disease (false needle felting positive). If the incidence of Alzheimer's is 1%, then the test population of 1,000 people - will recommend nine people who actually will this have Alzheimer's - not single out one man who had Alzheimer's will - detect Alzherimera in 10% of 990 = 99 people who Alzherimera have not What it means that only 8% of the tests that are correct people actually become sick. This is true for all tests, including those 99.9% - which is why you have to be very careful when test stems legal consequences - hence such tests for drugs to be repeated by another method in order to condemn the "stoned" driver - because In many cases, a positive test is a false positive # show comment needle felting Shaki 1 week ago 32
@ Ukradli_mi_strimsa: In short: The discovery is given a simple example, a problem associated with such tests - take a group of 1,000 people, found that 1%, or 10 people will develop Alzheimer's disease within three years. Test detects nine of them, just in case one is negative. So far it is good. The problem is that spośrób the rest of the 990 people who will develop Alzheimer's NOT in the next three years, will test 99 false positives. So we have a total of 108 positive results, of which only 8% of people, needle felting about one in ten, actually ill with Alzheimer's. Man assumes that the test has 90% efficiency, which is down to earth if detected - that is almost certainly that's needle felting true, when in fact if your result is positive, it is likely that you will be sick of only 8%. # Show comment Shaki 1 week ago 4
[Comment deleted] show comment ukradli_mi_strimsa 1 week ago 0 @ telpeloth: @ Shaka: Thanks This is true for all tests, including those 99.9% - which is why you have to be very careful when test stems legal consequences - hence such . tests for drugs to be repeated by another method in order to condemn the "stoned" driver needle felting - because in many cases a positive test is a false positive @ telpeloth: This error HIV testing and paternity (the genetic) also affected? # Show comment telpeloth 1 week ago 14
@ Ukradli_mi_strimsa: Yes, any test can have false-positive errors and false-negative. But you have to take into account that a paternity test is a simple test is not a yes / no. In the case of paternity tests done PCR from a dozen different pieces of DNA. The test can not tell the degree of kinship, but about the similarity of DNA, which may mean that if your child does your wife's brother, the test does not detect the difference between you - the thing is quite complicated, my wife, who is a doctoral needle felting student of biology and knows how to carry PCRy said that if the test shows a relationship, it is very certain, if she shows no - it's almost a hundred percent certain. # Show comment dzikireks 1 week ago +2
@ Ukradli_mi_strimsa: the problem is the large number of false pozytywnywch, and the term "90% needle felting effectiveness" refers only to the detection of the real thing. It is an affliction of many diagnostic tests that are worthless when the show too much falsely positive. For example, imagine that you are going to check out if you have HIV: a test with 90% efficiency, will pick up more than 90% of cases where someone has hiva, so chances are that you have hiva, the test will tell you that you do not have are like 1 10, which are small. THIS well, because as you are sick, it is detect. But the problem begins when the test has a large quantity of false positive indications, which indicates the presence of the disease in people who are not sick. That's just thi bad because a lot of people completely healthy survive the shock, seeing the results. The ideal situation is when the test detects all infections and has few false indications pozytwywnych. This test for Alzheimer's, however, has a lot of falsely positive, which puts into question its usefulness. # Show comment Dekapitator 1 week ago 0
@ Telpeloth: needle felting It's like
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