Exact(6)
Each stratum has its own combinatorial pattern specifying the characteristic combinations of elements on that stratum.
The algorithm is based on the idea of a quadtree decomposition, where an area is successively divided into strata so each stratum has more-or-less equal variation.
Each stratum has to recruit at least 270 patients.
This assumes each stratum has a different baseline hazard function, while the other covariates are assumed to be constant across strata.
For each healthcare area, the sample size of each stratum has been selected such that the individuals with the same demographic characteristics had equal probability of being selected independently of the selected centre.
Estimates of the sCFR can be stratified by risk group, provided that all surveillance levels used to generate estimates are similarly stratified, so that each stratum has its own independent pyramidal strategy.
Similar(53)
More than 10% of Ugandan men in each stratum had more than one active partnership on the day of the interview, compared to 1% of Thai low income men and 4% of Thai truckers.
When performing stratified analyses, each stratum had at least 10 registered revisions.
Each stratum had at least three study regions; for this study, one was selected to represent each stratum.
We therefore analysed data for 195 control days paired to case days in 87 strata; each stratum had an average of 2.2 control days.
Each province was divided into geographic areas or strata, and all phone numbers within each stratum had the same probability of being chosen.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com