stratification


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Related to stratification: gender stratification

stratification

 [strat″ĭ-fĭ-ka´shun]
arrangement in layers.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

strat·i·fi·ca·tion

(strat'i-fi-kā'shŭn),
The process or result of separating a sample into subsamples according to specified criteria such as age or occupational groups.
[L. stratum, layer, + facio, to make]
Farlex Partner Medical Dictionary © Farlex 2012

stratification

The grouping of subjects/patients based on key prognostic factors measured at baseline.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

strat·i·fi·ca·tion

(strat'i-fi-kā'shŭn)
The process or result of separating a sample into subsamples according to specified criteria, such as age or occupational group.
[L. stratum, layer, + facio, to make]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

stratification

a process in which certain seeds are subjected to low temperatures for a period of time, in order for GERMINATION to take place. Natural stratification occurs when seeds are shed in autumn and become covered with soil, leaves, etc. during the winter. The process can be reproduced artificially by alternating layers of seeds with layers of moistened substrate such as sphagnum moss and storing at a low temperature.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Jung et al17, examined the validity of the novel UGIB risk stratification system AIMS65 in patients presenting with peptic ulcer-related bleeding.
When considering sex stratification, only women were found to have MD associated with significantly reduced stroke risk, although the risk for men was down trending.
Cellanyx has demonstrated clinical proof-of-concept with its lead test in development, a test to improve risk stratification in men with prostate cancer.
Martins and) e Souza [18] analyzed the air flow characterization, mixture formation and stratification in a DISI engine using CFD.
Trimethylamine N-oxide and risk stratification after acute myocardial infarction.
It was concluded that both the later stages of terminal differentiation (stratification) and senescence reduced the adhesion rate of NHEKs to FN but that differentiation alone did not.
The NCCN risk stratification system groups patients into fve risk categories: very low (T1 c and Gleason [less than or equal to]6 and PSA <1 0 ng/mL and <3 positive core biopsies); low (T1-T2a and Gleason [less than or equal to]6 and PSA <10 ng/mL); intermediate (T2b-T2c or Gleason 7 or PSA=10-20 ng/mL); high (T3a or Gleason 8-10 or PSA >20 ng/mL); and very high (T3b-T4 or Gleason primary pattern 5).
"Necessity is the mother of invention," or experimentation in this case, and it was the timing of the inevitable failure of his current split system that has brought about not only a practical solution to the stratification problem, but also reduced energy consumption at a reasonable cost.
Shapiro and Fedorovish [15] presented analytical solution of one-dimensional laminar natural convection along an infinite vertical plate by introducing the pressure work term and the ambient thermal stratification in the thermodynamic energy equation for the case of unit Prandtl number.
Risk stratification is an important part of diabetes and health management.
The numerical study researched the effect of temperature stratification on HCCI combustion using large eddy simulation (LES) and 0-d multi-zone simulation [4].
Treatments [T.sub.3], [T.sub.6] and [T.sub.9], consisted in scarification of the seeds in their apical portion with sandpaper n.80 (FERREIRA et al., 2009), and posterior stratification as previously described.