. 2012 Aug 19;65(1):84–90. doi: 10.1007/s00248-012-0101-3

Table 4.

VF scores of integron-positive and integron-negative E. coli in relation to phylogenetic group affiliation

Phylogenetic group/subgroup	VF score range		Median VF score		Average VF score		P
Phylogenetic group/subgroup	intI1-positive	intI1-negative	intI1-positive	intI1-negative	intI1-positive	intI1-negative	P
A	0–4	0–3	1	1	1.52	0.68	<0.001^a
A₀	1–3	0–1	1	0	1.38	0.33	0.004^a
A₁	0–4	0–3	1	1	1.56	0.83	0.015^a
B1	0–3	0–2	1	0	1.57	0.50	0.003^a
B2	0–3	1–4	1.5	2	1.75	2.11	0.522
B2₂	0–3	1	1	1	1.17	1.00	1.000
B2₃	1–3	1–4	2.5	2	2.33	2.25	0.846
D	0–5	0–3	1	1	1.90	0.86	0.008^a
D₁	0–4	0–2	2	0.5	2.12	0.69	0.011^a
D₂	1–5	0–3	1	1	1.77	1.40	0.767
Total	0–5	0–4	1	1	1.65	0.82	<0.001^a

^aStatistically significant differences between intI1-positive and intI1-negative isolates (Mann–Whitney U test)