Table 1.

Association between biofilm-forming strength and specimen origin.

	Source
	bile	blood	dental	pus	stool	urine	vagina	Total
Biofilm Strength
No Biofilm	0	0	1	0	3	0	0	4
Weak	2	5	0	2	1	33	0	43
Moderate	0	0	2	0	5	31	0	38
Strong	0	0	0	0	0	4	1	5
Total	2	5	3	2	9	68	1	90

Chi-square = 58.03 (with 18 degrees of freedom); P ≤ 0.0001.