Percentages and means were compared using the likelihood ratio test and the F test, respectively, and homogeneity groups were determined when significant differences were found by using the corresponding linear contrasts.
To ensure homogeneity, group composition is determined according to residents' motor and cognitive status, i.e., based on impressions and results derived from performance-based tests and cognitive screening at baseline testing.
Hierarchical clustering, based on isoform level expressions, effectively grouped the non-oncogenic and oncogenic cell lines with a virtually perfect homogeneity-grouping rate (97.5%), regardless of the tissue origin of the cell lines.
Differences between groups and homogeneity within groups were tested with multi-response permutation procedures (MRPP) using the Sørensen distance measure.
A performance ranking of these classification methods is carried out and differences in homogeneity of grouping results were shown, whereby selected groups were related to hydrogeological indices and geological descriptors.
The data show generally good separation of the four groups (NDP6 and DP6-8) due to greater homogeneity within groups compared to between groups.
Littermates were distributed symmetrically among groups to achieve highest possible homogeneity across groups.
This method maximizes within-group homogeneity and between-group heterogeneity, and does not require pre-specification of the number of clusters.
For each linear mixed-effects model assumptions – constant variance, homogeneity of group variances and normality of the within-group errors – were assessed graphically (Pinheiro and Bates, 2000).
Prior to perMANOVA we checked its assumption (similar variance homogeneity between groups) by performing a distance-based test for multivariate homogeneity of group dispersions (MHGH) for a one-way ANOVA design [ 123].
The high homogeneity of group 2 genes and their organization in clusters suggest a more recent origin of this group.
