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Table 3 pks prevalence according to CRC subgroups

From: Prevalence of pks-positive Escherichia coli in Japanese patients with or without colorectal cancer

Subgroup pks-positive pks-negative Total pks prevalence
Location of CRC
 Right-sided 4 4 8 50%
 Left-sided 8 11 19 42%
     p = 0.706
Depth of CRC
 M or SM 3 2 5 60%
 MP or further 9 13 22 41%
     p = 0.438
k-ras gene status
 Wild-type 0 4 4 0%
 Mutant 3 3 6 50%
     p = 0.091
Obstruction and treatment status
 Non-obstructed, before treatment 7 5 12 58%
 Non-obstructed, under or after treatment 3 8 11 27%
     p = 0.133
 Obstructed 5 7 12 42%
     p = 0.414
  1. CRC colorectal cancer, M mucosa, SM submucosa, MP muscularis propria