Sentence examples for unique stratum from inspiring English sources

Each unique stratum (or grid cell for systematic sampling) is assigned the field plot-estimated carbon stock and multiplied by the total area within the stratum.

For each unique stratum, the algorithm progressively grows a subset of the HLA alleles until there is not a remaining allele in the stratum that can exert an additional effect of p < 0.5.

Eventually recognizing that these fossil-bearing sequences represented lateral equivalents in time and perhaps temporally unique strata as well, Sedgwick and Murchison in 1839 proposed the Devonian System.

However, the apparent lack of regionality (with respect to these mineralogical and elemental analyses) may be an artifact of sample size (as other geochemical parameters are known to be highly, regionally variable in the Marcellus play [5, 7]) or may arise from the pooling of samples from unique strata.

And – thanks to remarkable discoveries preserved in unique geological strata – China long ago became a powerful player in the world of palaeontology.

Analyses were stratified by age-group, such that stratified estimates (equal coefficients across strata but with a baseline hazard unique to each stratum) were then obtained.

Relative risk was estimated by Cox regression, taking attained age as the underlying time variable, and stratifying by cancer registry region of residence at recruitment (i.e. assuming equal coefficients across strata but with a baseline hazard unique to each stratum) (StataCorp., 2009).

A stratified Cox proportional hazards model was fitted and hazard ratio estimates were obtained, with equal coefficients across strata (sites) but with a baseline hazard unique to each strata.

The 'Statistical analysis' section, 'Population attributable risk' sub-section, page 2, paragraph 5, should have read: "where t denotes a stratum of unique combinations of levels of all background risk factors which are not modifiable and/or not under study, t=1,…,T and OR2t is the odds ratio in combination t relative to the lowest risk level, where OR 2,1=1.

Under the assumption of no interaction between the modifiable and non-modifiable risk factors of interest, the partial PAR is formulated as where t denotes a stratum of unique combinations of levels of all background risk factors which are not modifiable and/or not under study, t=1,…, T and OR2 t is the odds ratio in combination t relative to the lowest risk level, where OR2,1=1.

Surveys were merged with strata kept unique between years and districts to preserve the sampling structure.