English to Hungarian Science Mathematics & Statistics Biostatistics

Egy klinikai vizsgálat statisztikai részében szerepel. Nem találom a magyar megfelelőjét - a "pattern" okoz gondot (mintának nem fordítható, mert az itt a “sample” megfelelője). Angol magyarázat:
The key distinguishing feature of mixed-effects models (MEMs) compared with traditional statistical methods used in medical research is that they are based on less restrictive assumptions. […] There are several types of MEMs that are mathematically equivalent: the random effects model, the random coefficient model, and the **covariance pattern model**. […] The **covariance pattern model** is a type of MEM that directly models a pattern of correlations among observations. For example, in the hypothetical 6-week antidepressant trial with weekly measurements, we can allow the correlations among the repeated observations on the same subject to follow a certain pattern. http://www.psychosomaticmedicine.org/cgi/content/full/64/3/5...
Előre is köszönöm a segítséget.