ELIZA

return kwic search for model out of >500 occurrences
469466 occurrences (No.35 in the rank) during 5 years in the PubMed. [cache]

417) We illustrate the usage of this new model by investigating the marginal effects of pre-specified genetic markers on physical functioning, as measured by the Health Assessment Questionnaire, in a cohort of psoriatic arthritis patients from the University of Toronto Psoriatic Arthritis Clinic.

--- ABSTRACT ---

PMID:21873302 DOI:10.1177/0962280211414620

2015 Statistical methods in medical research

* A likelihood-based two-part marginal model for longitudinal semicontinuous data.

- Two-part models are an attractive approach for analysing longitudinal semicontinuous data consisting of a mixture of true zeros and continuously distributed positive values. When the population-averaged (marginal) covariate effects are of interest, two-part models that provide straightforward interpretation of the marginal effects are desirable. Presently, the only available approaches for fitting two-part marginal models to longitudinal semicontinuous data are computationally difficult to implement. Therefore, there exists a need to develop two-part marginal models that can be easily implemented in practice. We propose a fully likelihood-based two-part marginal model that satisfies this need by using the bridge distribution for the random effect in the binary part of an underlying two-part mixed model; and its maximum likelihood estimation can be routinely implemented via standard statistical software such as the SAS NLMIXED procedure. We illustrate the usage of this new model by investigating the marginal effects of pre-specified genetic markers on physical functioning, as measured by the Health Assessment Questionnaire, in a cohort of psoriatic arthritis patients from the University of Toronto Psoriatic Arthritis Clinic. An added benefit of our proposed marginal model when compared to a two-part mixed model is the robustness in regression parameter estimation when departure from the true random effects structure occurs. This is demonstrated through simulation.

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[frequency of next (right) word to model]

(1)63 of	(12)7 as	(23)3 assessment	(34)2 demonstrated
(2)55 null	(13)6 are	(24)3 fit	(35)2 it
(3)35 for	(14)6 system	(25)3 revealed	(36)2 joints
(4)28 was	(15)5 a	(26)3 showed	(37)2 may
(5)26 to	(16)5 selection	(27)3 systems	(38)2 not
(6)16 and	(17)5 which	(28)3 were	(39)2 results
(7)16 in	(18)5 will	(29)2 allows	(40)2 species
(8)16 is	(19)4 can	(30)2 analyses	(41)2 such
(9)16 with	(20)4 parameters	(31)2 appropriate	(42)2 used
(10)12 that	(21)4 using	(32)2 biological
(11)8 the	(22)4 we	(33)2 consists

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--- WordNet output for model --- =>模型, 作る, 形に表わす, 模範, モデル, 型, 模型の, 模範となる, かたどる, 手本, モデルをする, 手本となる Overview of noun model The noun model has 9 senses (first 7 from tagged texts) 1. (19) model, theoretical account, framework -- (a hypothetical description of a complex entity or process; "the computer program was based on a model of the circulatory and respiratory systems") 2. (11) model -- (a type of product; "his car was an old model") 3. (6) model, poser -- (a person who poses for a photographer or painter or sculptor; "the president didn't have time to be a model so the artist worked from photos") 4. (4) model, simulation -- (representation of something (sometimes on a smaller scale)) 5. (3) exemplar, example, model, good example -- (something to be imitated; "an exemplar of success"; "a model of clarity"; "he is the very model of a modern major general") 6. (1) model, role model -- (someone worthy of imitation; "every child needs a role model") 7. (1) model, example -- (a representative form or pattern; "I profited from his example") 8. mannequin, manikin, mannikin, manakin, fashion model, model -- (a woman who wears clothes to display fashions; "she was too fat to be a mannequin") 9. model, modelling, modeling -- (the act of representing something (usually on a smaller scale)) Overview of verb model The verb model has 6 senses (first 2 from tagged texts) 1. (1) model, pattern -- (plan or create according to a model or models) 2. (1) model, mold, mould -- (form in clay, wax, etc; "model a head with clay") 3. model, pose, sit, posture -- (assume a posture as for artistic purposes; "We don't know the woman who posed for Leonardo so often") 4. model -- (display (clothes) as a mannequin; "model the latest fashion") 5. model, simulate -- (create a representation or model of; "The pilots are trained in conditions simulating high-altitude flights") 6. model, mock up -- (construct a model of; "model an airplane") Overview of adj model The adj model has 1 sense (first 1 from tagged texts) 1. (1) exemplary, model -- (worthy of imitation; "exemplary behavior"; "model citizens") --- WordNet end ---