It is possible to mix both models to obtain a mixed model representation (see section on simple structures, model number 4).
From a certain point of view it can be seen as a mixed model (see next section) when referring to its depth of aggregation.
All DE genes were found significantly differentially expressed over time in the mixed model described in Section " Integration" (F D R<0.05).
Functional enrichment was performed on each list of clustered genes identified by HAC and on the list of genes of which expression is significatively explained by cell population changes in blood (according to the mixed model described in Section " Integration").
Section "A mixed model approach" introduces the specific mixed model in which the log proportional hazards measure forms the outcome measure, the study factor is a normally distributed random effect (to cope with unobserved heterogeneity), and other observed covariates (such as gold standard or diagnostic test variation) are considered as fixed effects in the mixed model.
In addition to the fixed effect covariates described in the method section, our mixed model specified sample plate, well, and sentrix position as random variables to account for batch effect and random effects due to sample allocation on the Infinium BeadChip in the array experiment.
For this parameter, we, therefore, included the number of days after the start of the experiment as a predictor variable in a generalized linear mixed model (GLMM) (see the " Statistical analysis" section).
Therefore, study group usage was the only grouping variable used in the mixed model, and study group usage and lecture section were used in the ANCOVA.
Dry body weight (section C, 9 10 replicates per population) was analysed using two-factor, mixed model ANOVA with selection regime as fixed factor crossed with random blocks.
37 Treatment differences in physical and biochemical measures were assessed using all available data from the 39 participants and a repeated measures mixed model accounting for time of assessment (SAS V.9.2) 44 in tables 2 and 3 and the Results section.
