ELIZA

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617251 occurrences (No.12 in the rank) during 5 years in the PubMed. [cache]

424) The inclusion of latent frailties in survival models can serve two purposes: (1) the modelling of dependence in clustered data, (2) explaining lack of fit of univariate survival models, like deviation from the proportional hazards assumption.

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PMID:22116343 DOI:10.1177/0962280211424665

2015 Statistical methods in medical research

* Frailties in multi-state models: Are they identifiable? Do we need them?

- The inclusion of latent frailties in survival models can serve two purposes: (1) the modelling of dependence in clustered data, (2) explaining lack of fit of univariate survival models, like deviation from the proportional hazards assumption. Multi-state models are somewhere between univariate data and clustered data. Frailty models can help in understanding the dependence in sequential transitions (like in clustered data) and can be useful in explaining some strange phenomena in the effect of covariates in competing risks models (like in univariate data). The (im)possibilities of frailty models will be exemplified on a data set of breast cancer patients with death as absorbing state and local recurrence and distant metastasis as intermediate events.

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(1)70 from	(14)7 revealed	(27)3 analyses	(40)2 at
(2)55 were	(15)7 support	(28)3 can	(41)2 by
(3)32 null	(16)7 was	(29)3 concerning	(42)2 clearly
(4)26 on	(17)6 analysis	(30)3 in	(43)2 clustering
(5)19 and	(18)6 obtained	(31)3 indicated	(44)2 have
(6)18 for	(19)5 collection	(32)3 may	(45)2 here
(7)17 suggest	(20)5 sets	(33)3 the	(46)2 highlight
(8)13 are	(21)5 showed	(34)3 which	(47)2 mining
(9)11 set	(22)5 we	(35)3 with	(48)2 show
(10)11 to	(23)4 demonstrate	(36)3 would	(49)2 shows
(11)9 of	(24)4 is	(37)2 about
(12)7 collected	(25)4 provide	(38)2 also
(13)7 indicate	(26)4 regarding	(39)2 as

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--- WordNet output for data --- =>データ, 資料 Overview of noun data The noun data has 1 sense (first 1 from tagged texts) 1. (76) data, information -- (a collection of facts from which conclusions may be drawn; "statistical data") Overview of noun datum The noun datum has 1 sense (first 1 from tagged texts) 1. (5) datum, data point -- (an item of factual information derived from measurement or research) --- WordNet end ---