ELIZA

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346933 occurrences (No.53 in the rank) during 5 years in the PubMed. [no cache] 500 found

235) Based on two sets of molecular data and a simulation study, we show that violations of the regularity assumptions may lead to over-optimistic estimates of prediction accuracy and may therefore result in biased conclusions regarding the clinical utility of new biomarkers.

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PMID:24036698 DOI:10.1093/bib/bbt059

2015 Briefings in bioinformatics

* On the validity of time-dependent AUC estimators.

- Recent developments in molecular biology have led to the massive discovery of new marker candidates for the prediction of patient survival. To evaluate the predictive value of these markers, statistical tools for measuring the performance of survival models are needed. We consider estimators of discrimination measures, which are a popular approach to evaluate survival predictions in biomarker studies. Estimators of discrimination measures are usually based on regularity assumptions such as the proportional hazards assumption. Based on two sets of molecular data and a simulation study, we show that violations of the regularity assumptions may lead to over-optimistic estimates of prediction accuracy and may therefore result in biased conclusions regarding the clinical utility of new biomarkers. In particular, we demonstrate that biased medical decision making is possible even if statistical checks indicate that all regularity assumptions are satisfied.

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(1)142 the	(8)4 data	(15)2 clinical	(22)2 partial
(2)40 a	(9)4 our	(16)2 combined	(23)2 previous
(3)19 these	(10)4 two	(17)2 current	(24)2 radiological
(4)9 their	(11)3 16S	(18)2 functional	(25)2 sequences
(5)7 this	(12)3 an	(19)2 histological	(26)2 shear
(6)5 its	(13)2 all	(20)2 interviews	(27)2 small
(7)4 both	(14)2 changes	(21)2 morphology	(28)2 surveys

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--- WordNet output for based --- =>に基づき Overview of verb base The verb base has 3 senses (first 1 from tagged texts) 1. (75) establish, base, ground, found -- (use as a basis for; found on; "base a claim on some observation") 2. base -- (situate as a center of operations; "we will base this project in the new lab") 3. free-base, base -- (use (purified cocaine) by burning it and inhaling the fumes) Overview of adj based The adj based has 2 senses (first 2 from tagged texts) 1. (3) based -- (having a base; "firmly based ice") 2. (1) based -- (having a base of operations (often used as a combining form); "a locally based business"; "an Atlanta-based company"; "carrier-based planes") --- WordNet end ---