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Table 4 Median (interquartile range) relative counts (% total bacteria) of the test species/genera in subgingival plaque from the healthy and periodontitis sites

From: Subgingival periodontal pathogens associated with chronic periodontitis in Yemenis

Species Healthy sites (n = 20) Periodontitis sites (n = 20) Fold difference P
A. actinomycetemcomitans 0.001 (0.000-0.020) 0.001 (0.000-0.005) 0.07 0.12
Fusobacterium spp. 0.789 (0.238-1.205) 0.701 (0.250-1.029) 0.81 0.79
Prevotella spp. 0.360 (0.222-0.903) 0.394 (0.228-0.751) 1.23 0.50
P. micra 0.009 (0.003-0.022) 0.031 (0.014-0.081) 3.39 0.0001*
P. gingivalis 0.004 (0.0001-0.0611) 0.068 (0.0001-0.219) 1.97 0.156
T. forsythia 0.302 (0.055-0.541) 0.425 (0.170-1.50) 0.86 0.08
T. denticola 0.092 (0.007-0.438) 0.338 (0.126-0.613) 1.33 0.006*
  1. *Statistically significant after adjustment for multiple comparisons (P ≤ 0.0063); Wilcoxon signed ranks test.