reliability

(redirected from unreliable)
Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.

reliability

 [re-li″ah-bil´ĭ-te]
1. in statistics, the tendency of a system to be resistant to failure.
2. precision (def. 2).

re·li·a·bil·i·ty

(rē-lī'ă-bil'i-tē),
The degree of stability exhibited when a measurement is repeated under identical conditions. See: correlation coefficient, reliability coefficient.
[M.E. relien, fr. O.Fr. relier, fr. L. religo, to bind]

reliability

Statistics The extent to which the same test or procedure will yield the same result either over time or with different observers. See Interrater reliability, Test-retest reliability.

re·li·a·bil·i·ty

(rĕ-lī'ă-bil'i-tē)
Repeatability; ability of a test to be repeated by several testers and produce the same result.
[M.E. relien, fr. O.Fr. relier, fr. L. religo, to bind]

reliability 

The extent to which multiple measurements of the same thing, made on separate occasions, yield approximately the same results. The reliability between two sets of scores can be assessed by determining the correlation coefficient (test-retest reliability coefficient). See validity.

re·li·a·bil·i·ty

(rĕ-lī'ă-bil'i-tē)
Degree of stability exhibited when a measurement is repeated under identical conditions.
See: correlation coefficient
[M.E. relien, fr. O.Fr. relier, fr. L. religo, to bind]

Patient discussion about reliability

Q. How easy is it to tell about the baby’s birth date? Is it reliable? Hi everyone! My sister is being diagnosed as pregnant. She has a very regular menstrual cycle and her hormone levels are good. How easy is it to tell about the baby’s birth date? Is it reliable?

A. My friend got the due date of birth by doctor and it goes very near by, just the difference was for 5 days from the date. Since you have very regular menstural cycle, it would be easy for the doctors to calculate the birth date. And you can rely on the birth date being calculated by the doctors. It can be calculated easily. You need to find the 1st day of your last period then count back 3 months and add 7 days. Now you get your date.

Q. Can someone…clarify which is the best and reliable one? Hi I am 23 years woman............ I am confused with the different type of tests and diagnosis my friend is having as she is being suspected for breasts cancer. Can someone…clarify which is the best and reliable one?

A. Please understand that all the tests that are being carried out are reliable and it would entirely depend upon the requirement and treatment stages. They would also depend upon age groups , stages of cancer etc. In general the different types are: clinical breast examination done by the clinicians in a clinic. Mammogram, which are special X-ray to check abnormal growth changes in the breast tissues. Chance of cyst to be confused by breast cancer is resolved by ultrasound. To check if the particular tissue is cancerous is done by breast biopsy.

Q. What are the tests and steps involved in diagnosis of breast cancer and are all tests reliable?

A. First symptoms are looked for----- as a lump and pain associated with it and any redness or any nipple discharge. They also look for the medical history and if found for any possibility then it’s evaluated by mammography, but for woman it can give wrong result as they have dense breasts but for men it is well diagnosed. If any breast abnormalities are found during mammography they are confirmed with ultrasound and for women patients this is a better option. For women and symptom evident men for nipple discharge are also looked for nipple discharge test. But these tests do not confirm a cancer and for confirmation a biopsy is required followed by lab test on those biopsy samples. Biopsy is removing of body tissue for further cancer confirmative lab tests which is generally looking under a microscope to indentify the cell type and the type of cancer is known. Their reliability is based on the person operating the instrument and his experience.

More discussions about reliability
References in periodicals archive ?
Taking a position on Harry's trustworthiness might be a complicated exercise, but the complicating factors feel familiar for how they figure Harry as an unreliable narrator in the most fundamental of critical terms.
Sigma values directly relate to the predicted probability of producing an unreliable patient result.
Coroner Mr Pritchard Jones said that the mast at Felinheli picks up signals from a huge area and had been unreliable in other mountain rescue searches.
A suitable illustration of the Bush administration's priorities is found in the fact that it demoted the CIA for providing reliable, albeit politically unpalatable, intelligence about Iraq, while elevating the unreliable Negroponte to be our nation's first "Intelligence Czar."
IN A report in the Racing Post on March 19, Nigel Roddis describes a point made by the National Trainers' Federation in its argument against 48-hour declarations as "unreliable".
The low live volts put out by the MBITR center pin causes the ITH to switch back and forth between powered and unpowered mode leading to unreliable operation.
One well-documented effect of torture is that people will say or do anything to escape the situation, rendering information provided under torture extremely unreliable. Torture victims also offer untrue "confessions" and readily implicate innocent people, who may well then be tortured in turn.
This manual process has proven to be extremely expensive in terms of consulting dollars, and unreliable because it depends on people's memories and cooperation.
The tests facilitated assessment of the type of sensory organization used to maintain postural control under conditions ranging from quiet standing to a situation in which visual and somatosensory information was systematically removed or made unreliable. Results indicated that ballet dancers and controls have comparable balance ability during eyes open and eyes closed conditions.
Power outages often left Baghdad without electricity for days at a time; power is still unreliable today.
"Government decision-makers cannot make rational decisions about one of the largest and costliest projects in City history when the information on which they are relying is inaccurate, misleading and unreliable," said petitioners' attorney, Randy Mastro, partner at Gibson, Dunn & Crutcher, LLP.