TABLE 2

Effects of THB plus 1% glucose versus THB on biofilm formation by different GBS serotypesa

SerotypeMean CV assay valueNo. (%) of strains with CV assay values of >3MeanTHB + 1% glucose/meanTHBMean differenceAdjusted P value
THB + 1% glucoseTHB
Ia0.910.135 (8.6)7.000.780.6254
Ib0.660.170 (0)3.880.490.9995
II0.450.130 (0)3.460.32>0.9999
III3.260.2141 (26.3)15.523.05<0.0001
IV0.610.140 (0)4.360.47>0.9999
V1.460.146 (10.5)10.431.320.0568
VIII0.760.200 (0)3.800.56>0.9999
IX0.310.110 (0)2.820.20>0.9999
Nontypeable0.830.211 (4.3)3.950.620.9900
III (ST-17)4.880.2237 (40.6)22.274.68<0.0001
III (non-ST-17)0.810.184 (6.1)4.370.620.9187
  • a For details, see Table 1, footnote a.