Synonymous with Depth, the adjustment that determines how deep or small a target can be detected - the higher the sensitivity, the greater the detection depth
When talking about riometer experiments, sensitivity refers to the minimum change in sky temperature (measured in Kelvin (K)) that can be detected by the given riometer system. It is also important how big the area is that is affected by the temperature change. Generally, the requirements the antenna system has to fulfil in order to achieve the required spatial resolution are harder to fulfil than the requirements for a reasonable sensitivity. This means that, in general, one need not worry about the sensitivity being too low.
Ability of a test or measure to identify individuals with the target disorder.
Extent to which a small change in concentration of an analyte can cause a large change in the related measurement. Gold, Loening, McNaught and Sehmi, 1987
Extent (usually expressed as a percentage) to which a method gives results that are free from false negatives; the fewer the false negatives, the greater the sensitivity. Quantitatively, sensitivity is the proportion of truly diseased persons in the screened population who are identified as diseased by the screening test. Galen and Gambino, 1975 RT specificity (of a screening test)
the likelihood that a test will successfully show a person to have a certain disease or condition
Refers to the probability that a test will be positive when the disease is present. (see Specificity, Positive Predictive Value and Negative Predictive Value).
A detector's ability to detect radar. Most radar detector manufacturers increase sensitivity as they add features and move up the product line.
In a screening test, is the proportion of those whose screening test was positive who, on diagnostic testing, turned out to have the disease.
a measure of how bright objects need to be in order for that telescope to detect these objects. A highly sensitive telescope can detect dim objects, while a telescope with low sensitivity can detect only bright ones. (See also text in HighPlanDish and GtrSensitiv.)
Proportion of people with the target disorder who have a positive test. It is used to assist in assessing and selecting a diagnostic test/sign/symptom.
An instrument's ability to identify people who have the characteristic under investigation.;( % of people w/ characteristic who are correctly identified by instrument)/(# of people w/ characteristic)
the probability that a diagnostic test can correctly identify the presence of a particular disease assuming the proper conduct of the test; specifically, the number of true positive results divided by the sum of the true positive results and the false negative results; see specificity
The probability that a test will be positive, given that the condition to be detected is present.
maximum recommended distance between the sensor and standard target at which sensor will effectively and reliably detect the target.
The proportion of individuals with the abnormality or disease that will have a positive test.
is the proportion of people with disease who have a positive test. See also SpPins and SnNouts.
(of a test); The proportion of cases with a condition that are correctly classified by the test as having the condition. Number of true positive cases divided by the number of true positive and false negative cases. Tests with high sensitivity are likely to find a condition if it exists. [See accuracy, prevalence, specificity
The probability that a patient with a disease, condition or injury will test positive by a particular test for the problem.
Sensitivity describes the ability of the audio sensor to detect sounds. Sounds below the sensitivity setting will not cause an audio activation. Sounds above the sensitivity setting will cause an activation.
In tests of validity, the percentage of all true cases identified correctly. See specificity.
For a diagnostic procedure, the conditional probability of a positive result given that disease is present
True positive rate (see Confusion matrix).
The smallest increment that can be reliably detected. This is the calculated value based on optical density statistical data from the Bo and lowest concentration standard.
The estimated sensitivity (synonym: True Positive Rate) of a diagnostic test is the estimated (or assumed) proportion of animals with the disease (or infection) of interest which test positive. It is a measure of the probability that a diseased individual will be correctly identified by the test. Sometimes called "population sensitivity" to distinguish from "analytical sensitivity". Important note For pooled testing, sensitivity is estimated at the pool level, so that in this context, sensitivity is the probability that a pool which includes samples from one or more infected individuals will test positive. Pool-level sensitivity is therefore affected by both prevalence and pool size. The higher the prevalence, the more infected individuals that will be represented in individual pools and the more likely a pool is to test positive and therefore the higher the sensitivity. This is in contrast to individual-level sensitivity, which is independent of prevalence. Conversely, the larger the pool size, the greater the dilution of any positive individual samples, potentially reducing sensitivity.
(Test)—the probability that a diagnostic test for a particular disease or pathogen will detect a true positive when it is present. This is distinct from the general use of the term to indicate a threshold of detection.
ability of an analytical method to detect small concentrations of radioactive material.
"Probability that a test result will be positive when the disease is present (true positive rate, expressed as a percentage)." (see http://www.medcalc.be/manual/mpage06-13a.html).
in medical screening, the proportion of individuals with a positive (indication of disease) screening result who actually have the disease. For example, for women who have mammograms, the sensitivity would be the number of women with a positive mammogram who actually have breast cancer.
The smallest difference in input that is required to cause a detectable output change expressed as inches of water column.
Is determined by the division of the number of true positives by the total number of patients who have the disease.
The ability of a test to detect clients who have the disease or condition for which they are being tested.
When discussing how good a particular test is, people talk about sensitivity. Sensitivity is a way of measuring how sensitive a test is to the condition; how good it is at finding the condition. When a test is very sensitive it will pick up all the cases of the disease. When a test is not very sensitive it will miss some of the cases. This means that a screening test which is not very sensitive will show that some people do not have the condition, when actually they do, but the test wasn't sensitive enough to pick them up. When people are told that they do not have a condition, but really they do, this is called a false-negative result. Tests that are not very sensitive produce more false-negative results.
measure of the reaction to a diagnostic test.
(of a diagnostic test): the proportion of truly diseased persons, as measured by the gold standard, who are identified as diseased by the test under study. ( Diagnosis) To Calculation
The proportion of people who test as positive to a disease who really do have the disease.
minimum detectable signal change
an operating characteristic of a diagnostic test that measures the ability of a test to detect a disease (or condition) when it is truly present. Sensitivity is the proportion of all diseased patients for whom there is a positive test, determined as: [true positives Ã‚Â¸ (true positives + false negatives)]. (Contrast with specificity.)
The probability of a positive result, given that the condition under consideration is true – for example, the probability of a positive test result in a person who has the disease under consideration (also called the true-positive rate).
The ability of a test to detect the proportion of true positive results for the disease that the test is intended to reveal. In other words, the probability that, given the presence of disease, a test result indicates the presence of disease.
The proportion of patients with the target disorder who have a positive test result.
The measure or capacity of a metal detector to perceive changes in conductivity within the loops detection pattern.
The ability of a system to detect epidemics and other changes in disease occurrence. The proportion of persons with disease who are correctly identified by a screening test or case definition as having disease.
The ability of an assessment procedure or instrument to detect clinically meaningful change.
1. The minimum detection limit of an assay. 2. The degree to which a pathogen is susceptible to a drug. A virus that is not resistant to a drug is sensitive to that drug.
Analytical - The probability that a test will detect an analyte when it is present in a specimen. Clinical - The probability that a person with a disease, or who will get a disease, will have a positive test result.
A measure of the minimum change in an input signal that an instrument can detect.
the smallest change in a physical quantity or parameter that can be detected by a measuring system. Determined by signal to noise ratio, system amplification and / or quantizing limit
proportion of infected animals tested correctly identified.
the ability of an organism to be affected by a drug or other agent (e.g., a virus is sensitive to AZT if AZT is able to prevent viral replication). Sensitivity also refers to a statistical measure of the accuracy of a screening test, i.e., how likely a test is to label as positive those who have a disease or condition. Contrast with specificity.
Proportion of people who are correctly identified by screening as having a disease.
Measures a test's ability to detect the presence of disease when an individual actually has the disease.
For quantitative test devices: The smallest concentration of a drug or drug metabolite that produces a response distinguishable from the background or blank value. For qualitative test devices: The minimum concentration of a drug or drug metabolite that is capable of generating a positive test result. In qualitative test devices, this amount is generally the same as the cutoff concentration.
the rate in counts per second that true coincidence events are detected for a given source activity and it has as a unit of measure counts/sec/MBq (NEMA definition)
The frequency with which a test yields a positive result when the individual being tested is actually affected and/or has the gene mutation in question
refers to the lowest level of PPM capable of detection by a gas leak detector. Generally, FID units are the most sensitive. Many semi-conductor sensors are only sensitive down to 10 to 300 PPM range.
Proportion of positive test results when a specific finding is truly present in a population.
a measure of a diagnostic test’s ability to correctly detect a disorder when it is present in a sample of people.
This is the smallest detectable amount of the analyte in question..
A term used to assess the value of a diagnostic test, procedure, or clinical observation. It is the proportion of people who actually have a specific disease and are identified by a particular test as such.
In psychology, the quality of being sensitive. As, for example, sensitivity training, training in small groups to develop a sensitive awareness and understanding of oneself and of ones relationships with others. In disease epidemiology, the ability of a system to detect epidemics and other changes in disease occurrence. In screening for a disease, the proportion of persons with the disease who are correctly identified by a screening test. In the definition of a disease, the proportion of persons with the disease who are correctly identified by defined criteria.
Smallest detectable amount of the analyte in question; analyte may include antibodies, antigens, nucleic acids or live organisms..
Proportion of known infected reference animals that test positive in the assay; infected animals that test negative are considered to have false-negative results..
Proportion of reference animals, defined as positive by one or a combination of test methods, that also test positive in the assay being compared..
The proportion of truly positive units that are correctly identified as positive by a test.
The sensitivity of a camera is often configured on your digital surveillance system. Motion Detection based recording uses relies on the sensitivity of the cameras to trigger recording
The capacity of a metal detector to perceive changes in conductivity within the detection pattern. Generally, the more sensitivity a detector can smoothly provide, the more depth it will achieve in sensing targets.
The ability of a diagnostic test to distinguish between truly diseased and truly healthy individuals.
(For a screening tests) The ability of a test to identify correctly all screened individuals who actually have the disease. ( 4-18)
Measure of how good a test is at discovering a disease when it is truly present
The minimum change of signal level or strength that can be detected by an instrument.
The sensitivity of a diagnostic or screening test is the proportion of people who truly have a designated disorder who are so identified by the test. The test may consist of or include clinical observations.
The proportion of time a diagnostic test is positive in patients who have the disease or condition. A sensitive test has a low false-negative rate.
is the proportion of people with disease who have a positive test. See also Calculating Sensitivity and Specificity.
The probability that a test result is positive when the subject has the disease. Synonyms include true positive rate. Sensitivity = a/n1 = TP/(TP+FN).
The sensitivity of a test is the probability of it giving a positive result if infection is truly present. As the sensitivity of the test increases the proportion of false negatives decreases.
The proportion of people with a disease who are correctly diagnosed (test positive based on diagnostic criteria). The higher the sensitivity of a test or diagnostic criteria, the lower the rate of 'false negatives,' people who have a disease but are not identified through the test.
When referring to a medical test, sensitivity refers to the percentage of people who test positive for a specific disease among a group of people who have the disease. No test has 100% sensitivity because some people who have the disease will test negative for it (false negatives).
the relationship of analyte concentration to instrument response. Mathematically, this is the slope of the linear plot of "instrument response vs. analyte concentration". Traditionally, in AA, the sensitivity is defined as the concentration of analyte that produces an instrument response of 0.0044 absorbance units (1% absorption).
In radio terminology, the degree to which a receiver will respond to an input of given strength. The greater the sensitivity, the weaker are the signals detected. See threshold signal.
The extent to which a diagnostic test correctly detects an abnormality. In defining a laboratory test's accuracy, sensitivity indicates the frequency of positive test results in patients who have the specific disease being tested for.
Sensitivity is a statistical measure of how well a binary classification test correctly identifies a condition, whether this be medical screening tests picking up on a disease or quality control in factories deciding if a new product is good enough to be sold.
The sensitivity of an electronic device, e.g., a communications system receiver, or detection device, e.g., PIN diode, is the minimum magnitude of input signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria.