Skip to main content

Table 3 Strength of association between the o454-nlpD regions and the MLST and Ecor groups, class or pathotype, host species, clinical category, and serogroup

From: Correlation between the genomic o454-nlpD region polymorphisms, virulence gene equipment and phylogenetic group of extraintestinal Escherichia coli (ExPEC) enables pathotyping irrespective of host, disease and source of isolation

  cramers.v uc.RC p.uc.RC uc.CR p.uc.CR uc.sym
MLST 0.99 0.28 0 0.99 0 0.44
Ecor 0.75 0.58 1.49e-228 0.72 4.63e-284 0.65
Class/Pathotype 0.22 0.05 2.79e-06 0.06 3.64e-06 0.05
Host species 0.31 0.08 1.42e-13 0.11 2.23e-11 0.09
Clinical category 0.19 0.03 1.38e-05 0.05 1.57e-05 0.04
O-groups 0.63 0.16 2.12e-65 0.45 1.8e-62 0.24
H-groups 0.56 0.17 1.48e-47 0.38 1.77e-42 0.24
Serogroup 0.84 0.19 8.93e-156 0.75 1.65e-272 0.3
  1. The values Cramer’s V, uc.RC, p.uc.RC, uc.CR, p.uc.CR and uc.sym are reported here. Cramers.v measure the association between two nominal variables, giving a value between 0 and +1 (inclusive); uc.RC is the Theil’s symmetric Uncertainty Coefficient UC, indicating how much knowing the values of the Row variables decreases uncertainty about the Column variables; p.uc.RC is the probability of gaining UC(R|C) by chance; uc.CR is the Theil’s symmetric Uncertainty Coefficient UC, indicating how much knowing the values of the Column variables decreases uncertainty about the Row variables; p.uc.CR is the probability of gaining UC(C|R) by chance; uc.sym is a combination of uc.RC and uc.CR. The association was evaluated with the R-package ‘polytomous’. The two-way contingency tables used for this analysis are reported in Additional files (see Additional file 2, Additional file 5, Additional file 6, Additional file 7, Additional file 8 and Additional file 9).