stratification


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Related to stratification: gender stratification

stratification

 [strat″ĭ-fĭ-ka´shun]
arrangement in layers.

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]

stratification

The grouping of subjects/patients based on key prognostic factors measured at baseline.

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]

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.

stratification

1. arrangement in layers.
2. in statistical terms the division of a population into subpopulations on the basis of specified criteria such as age, breed, parity. See stratified random sample.
References in periodicals archive ?
6Mm Ca for 5 days, which allows differentiation without stratification.
In South Asia, risk stratification is especially important, as limited health resources have to be distributed amongst a large population, which is already at high risk of CVD.
In the second study, to evaluate the effect of thermal stratification under practical condition, the computation with the detailed engine model was carried out.
The better results for emergence were observed in the treatments combining scarification and stratification, or only seed stratification.
Once data aggregation, risk assessment, and stratification are implemented, the analytic process has just begun.
Hospital readmissions was the metric most favorably impacted by health risk stratification, according to respondents; 65 percent reported a decrease in hospitalizations as a result of patient segmentation.
After finalising the analysis of 2,864 proteins, a panel of differentially expressed biomarkers was identified and patents were submitted prior to publication to cover these stratification markers.
For cold stratification treatment, seeds from central and lateral branches were separately imbibed and incubated in Petri dishes between moist filter paper layers at 5[degrees]C (in darkness).
In Sharryn Kasmir's analysis of class and labour stratification in the Saturn auto plant, she confounds the conventional tendency to find a labour aristocracy in the analysis of the stratification of labour, and opts instead for a dialectic analysis of "privilege and dispossession" (268) that underlies the making of working classes and the working class solidarity (that is, consciousness) both nationally and internationally.
Mechanical scarification without stratification induced the highest germination percentage (70.
e) The influence of duration of cold-stratification, and light conditions (light/dark cycle), during the stratification treatment, and seed age on germination percentage.