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return kwic search for treatment out of >500 occurrences
677804 occurrences (No.8 in the rank) during 5 years in the PubMed. [no cache] 500 found

337) Following ARV treatment, the profile of each subject's viral load tends to follow a 'broken stick'-like dynamic trajectory, indicating multiple phases of decline and increase in viral loads.

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PMID:22045781 DOI:10.1177/0962280211426184

2015 Statistical methods in medical research

* Piecewise mixed-effects models with skew distributions for evaluating viral load changes: A Bayesian approach.

- Studies of human immunodeficiency virus dynamics in acquired immuno deficiency syndrome (AIDS) research are very important in evaluating the effectiveness of antiretroviral (ARV) therapies. The potency of ARV agents in AIDS clinical trials can be assessed on the basis of a viral response such as viral decay rate or viral load change in plasma. Following ARV treatment, the profile of each subject's viral load tends to follow a 'broken stick'-like dynamic trajectory, indicating multiple phases of decline and increase in viral loads. Such multiple-phases (change-points) can be described by a random change-point model with random subject-specific parameters. One usually assumes a normal distribution for model error. However, this assumption may be unrealistic, obscuring important features of within- and among-subject variations. In this article, we propose piecewise linear mixed-effects models with skew-elliptical distributions to describe the time trend of a response variable under a Bayesian framework. This methodology can be widely applied to real problems for longitudinal studies. A real data analysis, using viral load data from an AIDS study, is carried out to illustrate the proposed method by comparing various candidate models. Biologically important findings are reported, and these findings also suggest that it is very important to assume a model with skew distribution in order to achieve reliable results, in particular, when the data exhibit skewness.

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(1)101 of	(14)4 showed	(27)3 the	(40)2 leads
(2)53 null	(15)4 were	(28)3 to	(41)2 led
(3)38 with	(16)3 as	(29)3 without	(42)2 may
(4)29 for	(17)3 by	(30)2 after	(43)2 program
(5)23 and	(18)3 cycle	(31)2 also	(44)2 protocols
(6)11 in	(19)3 group	(32)2 are	(45)2 response
(7)9 was	(20)3 modalities	(33)2 can	(46)2 schizophrenia
(8)6 groups	(21)3 on	(34)2 concentration	(47)2 seems
(9)6 options	(22)3 option	(35)2 cycles	(48)2 significantly
(10)5 or	(23)3 outcomes	(36)2 effects	(49)2 strategies
(11)4 allocation	(24)3 period	(37)2 group,
(12)4 completion	(25)3 plants	(38)2 induced
(13)4 effect	(26)3 success	(39)2 is

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--- WordNet output for treatment --- =>1.取り扱い, 扱い, 治療, 待遇, 処理, 処置, 2.台本, シナリオ Overview of noun treatment The noun treatment has 4 senses (first 4 from tagged texts) 1. (28) treatment, intervention -- (care provided to improve a situation (especially medical procedures or applications that are intended to relieve illness or injury)) 2. (25) treatment, handling -- (the management of someone or something; "the handling of prisoners"; "the treatment of water sewage"; "the right to equal treatment in the criminal justice system") 3. (4) treatment -- (a manner of dealing with something artistically; "his treatment of space borrows from Italian architecture") 4. (2) discussion, treatment, discourse -- (an extended communication (often interactive) dealing with some particular topic; "the book contains an excellent discussion of modal logic"; "his treatment of the race question is badly biased") --- WordNet end ---