TABLE 1.

Colonization at each peg site of MBEC assay system for P. aeruginosa grown for 4 or 24 h^a

Parameter	Log10 count/peg
	4 h	24 h
Mean	5.725	7.202
Median	5.778	7.204
SD	0.448	0.383
Lower 95% CIb	5.634	7.124
Upper 95% CI	5.816	7.280
Minimum	5.000	6.477
Maximum	6.602	7.954

^aBiofilms of P. aeruginosa grown for 4 or 24 h as described in Materials and Methods were sonicated and plated. The variability between pegs was determined by statistical procedures as described in Materials and Methods. 

^bCI, confidence interval.