stratification

Examples of stratify

stratify
Two contrasting dispersal models, one purely diffusive and one stratified, were then chosen to simulate colonization for the two contrasting initial genetic structures.
The random sample was stratified for age and region.
A stratified random sample of 1672 individuals was selected for study purposes out of 10 569 residents, stratified by age and gender.
The proof for the case of a continuously stratified fluid between rigid boundaries is straightforward.
The sample was stratified by age and rural-urban environment, and informed consent obtained to take blood specimens from subjects attending phlebotomy centres.
In most analyses, three diagnostic subcategories were used but in some, the category ' non-psychotic disorders ' was stratified.
The velocity and magnetic field are stratified in the vertical direction.
A multi-stage, stratified, random sampling procedure was used to identify the sample.
Clearly, a term is stratified if and only if it contains stratified constants only.
A community-dwelling sample of 1,118 people stratified by ethnic group and income was compiled using a cluster technique.
Table 3 presents the results of analysis stratified by neonatal pathological conditions.
The case next in complexity is that of three continuously stratified layers contained between two rigid boundaries and separated by two surfaces of density discontinuity.
The upper part (which is stratified above a lower massive unit) could therefore record a younger and time-averaged magnetization equivalent to a palaeomagnetic pole.
While, programs stratified with respect to aggregates can be used in many applications, more advanced applications require the use of aggregates in more general settings.
Since the sampling strategy was stratified by province, we draw upon robust standard errors clustered by province to assess statistical significance.
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