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325270 occurrences (No.61 in the rank) during 5 years in the PubMed. [no cache] 500 found

368) It quantifies the upper limit of the amount of information a diagnostic test can be expected to provide about a patient's disease state.

--- ABSTRACT ---

PMID:22368178 DOI:10.1177/0962280212439742

2015 Statistical methods in medical research

* The channel capacity of a diagnostic test as a function of test sensitivity and test specificity.

- We apply the information theory concept of "channel capacity" to diagnostic test performance and derive an expression for channel capacity in terms of test sensitivity and test specificity. The expected value of the amount of information a diagnostic test will provide is equal to the "mutual information" between the test result and the disease state. For the case in which only two test results and two disease states are considered, mutual information, I(D;R), is a function of sensitivity, specificity, and the pretest probability of disease. The channel capacity of the test is the maximal value of I(D;R) for a given sensitivity and specificity. After deriving an expression for I(D;R) in terms of sensitivity, specificity, and pretest probability, we solve for the value of pretest probability that maximizes I(D;R). Channel capacity is obtained by using this value of pretest probability to calculate I(D;R). Channel capacity provides a convenient and meaningful single parameter measure of diagnostic test performance. It quantifies the upper limit of the amount of information a diagnostic test can be expected to provide about a patient's disease state.

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[frequency of next (right) word to provide]

(1)109 a	(12)6 insight	(23)3 care	(34)2 effective
(2)39 an	(13)6 recommendations	(24)3 direct	(35)2 first
(3)32 the	(14)5 reliable	(25)3 guidance	(36)2 for
(4)25 evidence	(15)5 them	(26)3 novel	(37)2 good
(5)14 useful	(16)4 information	(27)3 preliminary	(38)2 greater
(6)13 new	(17)4 insights	(28)2 accurate	(39)2 methodological
(7)8 more	(18)4 such	(29)2 additional	(40)2 one
(8)7 rather	(19)4 us	(30)2 analytical	(41)2 some
(9)7 support	(20)4 valuable	(31)2 answers	(42)2 sufficient
(10)6 further	(21)3 adequate	(32)2 basic	(43)2 to
(11)6 important	(22)3 better	(33)2 clinically

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--- WordNet output for provide --- =>供給する, 与える, 規定する, 条件とする, 準備する, 用意する, 扶養する, 援助する Overview of verb provide The verb provide has 7 senses (first 4 from tagged texts) 1. (270) supply, provide, render, furnish -- (give something useful or necessary to; "We provided the room with an electrical heater") 2. (25) provide, supply, ply, cater -- (give what is desired or needed, especially support, food or sustenance; "The hostess provided lunch for all the guests") 3. (14) provide -- (determine (what is to happen in certain contingencies), especially by including a proviso condition or stipulation; "The will provides that each child should receive half of the money"; "The Constitution provides for the right to free speech") 4. (2) put up, provide, offer -- (mount or put up; "put up a good fight"; "offer resistance") 5. leave, allow for, allow, provide -- (make a possibility or provide opportunity for; permit to be attainable or cause to remain; "This leaves no room for improvement"; "The evidence allows only one conclusion"; "allow for mistakes"; "leave lots of time for the trip"; "This procedure provides for lots of leeway") 6. provide, bring home the bacon -- (supply means of subsistence; earn a living; "He provides for his large family by working three jobs"; "Women nowadays not only take care of the household but also bring home the bacon") 7. provide -- (take measures in preparation for; "provide for the proper care of the passengers on the cruise ship") --- WordNet end ---