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Table 5 Table of differences in hybridization ratios for the 4 Dutch and the 4 French markers between clinical isolates and environmental strains

From: Prediction of the origin of French Legionella pneumophila strains using a mixed-genome microarray

Markers Hybridization ratios
  Total sample Clinical isolates Environmental strains Effect size
  (n = 219) (n = 114) (n = 105)  
Dutch markers     
 7B8 1.64 (2.94) 2.33 (3.26) 0.89 (2.35) 0.50
 15D6 0.50 (0.53) 0.64 (0.53) 0.34 (0.48) 0.60
 16E4 1.17 (0.25) 1.23 (0.16) 1.11 (0.30) 0.50
 33 F8 1.08 (0.36) 1.07 (0.39) 1.09 (0.34) −0.06
French markers     
 8D12 0.96 (0.17) 1.01 (0.13) 0.91 (0.19) 0.57
 12H3 0.89 (0.20) 0.84 (0.16) 0.94 (0.23) −0.50
 19D6 0.64 (0.83) 0.91 (0.87) 0.35 (0.68) 0.72
 27B10 1.05 (0.14) 1.04 (0.09) 1.05 (0.18) −0.11
  1. Data represent mean hybridization ratios (SD). Effect size was calculated as the difference in ratio between clinical isolates and environmental strains, divided by the within group standard deviation (SD) of the ratio in the total sample. SD = standard deviation.