Association between biofilm formation and pulsed-field type. Relationship of the biofilm-forming capacity of individual strains and pulsed-field type (PFT). Data points represent the mean biofilm biomass of individual isolates tested from each of the unique PFTs, as determined by the microtiter plate assay. Line bar represents the median biofilm biomass for each PFT group. Only pulsed-field types with >3 individual strains were used for the comparison. Other denotes those groups with <3 clinical isolates. Error bars represent the standard deviation among the results for different isolates. One-Way ANOVA analysis with Holm-Sidak comparison test was used to determine statistical differences between groups. Asterisks indicate those groups that were statistically significant to the majority of PFT; *p<0.05.