To analyze inter-individual mRNA expression variances in RA, the occurrence of gene-specific expression differences in the SM was analyzed using the Bonferroni/Holm corrected Brown-Forsythe version of the Levene test for variance analysis [ 22- 24] on the basis of genome-wide mRNA expression data in RA (n = 12), osteoarthritis (OA) (n = 10), and normal control (NC) (n = 9) synovial tissue.
We nevertheless kept all the four factors in our model, as they also contributed jointly to the variance in the risk of occurrence of B. burgdorferi at a site, a contribution whose significance level cannot be estimated with the analysis.
A nonhomologous effect was observed in the case of ENSP, since the variance in ENSP occurrence was best explained by the country-specific use rates of the ATC category of other β-lactams, consisting mainly of cephalosporins.
The variance in nitrosamines occurrence and concentration in biosolids is high between the studied WWTPs.
Based on the estimates of the VPCs, site and sample level (i.e., swab tested) explained 9.1 % and 90.9 %, respectively, of the variance in C. difficile occurrence in the model with season (Table 2).
Heritability estimates of twin studies suggest that 48 52% of the variance in CWP occurrence is due to genetic factors, implying a strong genetic component.
In general, levels of self esteem did not explain a significant amount of the variance in occurrence of delusions (P1) (Table 4).
The ICC is an indication of the proportion of variance in occurrence of death among hospital wards.
This way we managed to obtain, for each transposable element, mean and variance, which we used to calculate a z-score zr = (xr − μr) / √sr, where xr is the occurrence of a particular transposable element r in the original dataset, while μr and sr are respectively its mean occurrence and its variance in the 1000 random sets.
