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Table 2 Statistically significant differences in the incidence of bacteriocin encoding determinants among UTI and control E. coli strains

From: Bacteriocin synthesis in uropathogenic and commensal Escherichia coli: colicin E1 is a potential virulence factor

Types of bacteriocin producers No. of UTI
bacteriocin producers
(%)
No. of control bacteriocin producers
(%)
Statistical significance
of the difference*
microcin H47 producers 74 (37.9) 61 (27.0) p = 0.02
producers of colicins Ia and Ib among mono-producers 10 (5.1) 31 (13.7) p = 0.003
producers of three or more bacteriocins 39 (20.0) 28 (12.4) p = 0.03
colicin E1 producers 43 (22.1) 23 (10.2) p = 0.0008
producers of colicin E1 among bacteriocin triple- and multi-producers 28 (14.4) 9 (4.0) p = 0.0002
bacteriocin E1 and Ia producers 19 (9.7) 10 (4.4) p = 0.03
bacteriocin E1, Ia, and mV producers 17 (8.7) 7 (3.1) p = 0.01
  1. *statistical methods derived from the binomial distribution were used (see Methods)