False positive rate

Basic Information

In general, the positive (+) transition of physiological disease or have a certain result. For example, a menopausal women do urine pregnancy test result is positive (+), it means that the woman has been pregnant, the thought can be prepared. Again, hepatitis B surface antigen (HB (a) A (g)) test results were positive (+), indicating that this is a patient with hepatitis B or hepatitis B virus carriers, to pay attention to do.

In contrast, a negative report on a single laboratory or mono (-), the majority of substantially deny or exclude the possibility of some kind of disease. Sometimes, the number of (+), but also indicates the severity of a disease on the degree of progression of the disease, which is representative of the change in the number. For example, have diabetes, regular urine tests, (+), (++), (+++) sign, it shows the condition of diabetes varies: (+) as a condition of light, (-) was obtained as a condition control, and (++) → (+++) illustrates the condition is not under control, continued to deteriorate and development; people suffering from gastric and duodenal ulcer disease, fecal occult blood test (+++) or (++ ++) indicates the severity of the patient's bleeding. However, positive or negative, (+) or (-) results sometimes represents the opposite side.

Also, the test results were negative (-) when, can not be blindly optimistic. For example, a person doing otosclerosis ear drum vibration test, but negative results prove that indeed the otosclerosis hepatitis B surface antibody (anti--HB (s)) positive (+) indicates the disease known as hepatitis B resistance force, negative (-) indicates not yet. Hepatitis B vaccine can become negative positive.

false positive rate

Chinese Name: false positive rate

English Name : false positive rate , FPR

common name :. misdiagnosis rate, or class ⅰ error.

interpretation: i.e., actual disease or negative, or positive but it is flagged as the percentage of sick.

calculation

the false positive rate = false positive number ÷ gold standard negative number

That is: the false positive rate = b ÷ (b + d)

formula: b / (b + d) × 100%

(b: screening positive, the standard classification for the number of cases of negative; d: negative the probability of the same number of cases)

meaningful

among scientific experiments or detection, false positive results.

disease, but the percentage of sick adjudged based screening.

basic content

the false positive rate (false positive rate, FPR), also known as misdiagnosis rate or section class ⅰ error .

i.e. the actual disease-free, but the percentage of sick adjudged based screening.

Network definition 1. false positive rate hepatitis hepatitis A, HA ... false positive rate false positive rate ... false negative rate false negative rate

2. FPR AA (2) ... false positive rate (the FPR), i.e. 1-specificity, positive probability is "normal" in the test results, according to equation (2) ... have:

3 . the FP diabetic nephropathy correctly determined that the probability of concurrent; false-positive rate (FP) is used to represent different standard blood glucose levels, patients with diabetic nephropathy is determined that the probability of non-concurrent. ...

4. Fpr false positive rate FPP FreePortal Pressure free portal pressure ... fpr false positive rate false positive rate faster ... FPV FastPhotovoltage photovoltage