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Table 2 The relation between species abundance and the five main sample clusters using the Kruskal Wallis test

From: Molecular assessment of bacterial vaginosis by Lactobacillus abundance and species diversity

Species K-W rank sum Cl. I (%) Cl. II (%) Cl. III (%) Cl. IV (%) Cl. V (%)
   BV neg. BV neg. BV pos. BV pos. BV pos.
Lactobacillus crispatus 33 0 79 0.4 0 0
Sneathia sanguinegens a 30 0 0 0.2 0.8 22
Coriobacteriaceae 28 0 0 1.3 0.4 2.0
Dialister micraerophilus 26 0.1 0 0.5 0.2 0.4
Atopobium vaginae 25 0 0 1.7 1.0 1.8
Veillonellaceae 23 1.3 0 11 5.8 12
Parvimonas sp 22 2 0 2.2 0.9 1.7
Saccharofermentans 22 0 0 6.6 0.8 2.1
Leptotrichia amnionii a 21 2.6 0 12 4.9 6.6
Gardnerella vaginalis 21 1.3 0.1 43 4.1 15
Lachnospiraceae 21 0.1 0 0.4 52 0.1
Prevotella amnii 18 0 0 0 6.5 13
Campylobacter sp 16 0 0 0 1.5 0
Lactobaccillus iners 16 81 17 5.4 5.5 5.5
Peptoniphilus lacrimalis 15 0 0 0.2 0.1 0
Lactobacillus jensenii 15 0.5 0.7 0.3 0 0
Dialister sp 15 0 0 1.1 0.1 0.7
  1. Per cluster the abundance of the species percentage is shown (p ≤ 0.02). The p-value is defined as the probability of observing a K-W rank sum of the size reported or more extreme when the null hypothesis is true (null hypothesis is that the distribution equal over all clusters for the selected species or bacterial Family). The K-W rank sum expresses the deviation from the distribution under the null hypothesis. For each cluster the most dominant species was printed in boldface. Values expressed as percentage and were rounded to two significant digits
  2. a Sneathia sanguinegens could not be unambiguously discriminated from Leptotrichia amnionii