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Table 1 Association between slime production on congo red agar and presence of icaA and icaD genes in the 82S. epidermidis strains

From: Analysis of S. Epidermidis icaA and icaD genes by polymerase chain reaction and slime production: a case control study

Groups n Slime production mecA vs icaD
icaA icaD icaA+icaD
r P value r P value r P value r P value
1 22 0.894 0.000 0.459 0.036 1.000 0.000 0.686 0.001
2 21 0.679 0.001 0.439 0.047 0.748 0.000 0.553 0.009
3 19 0.701 0.001 0.406 0.085 0.782 0.000 0.456 0.049
4 20 0.533 0.015 0.408 0.074 0.698 0.001 0.535 0.015
  1. Group 1, blood isolates obtained from patients’ IV line; Group 2, nasal isolates of healthy volunteers; Group 3, nasal isolates of the same patients in Group 1; Group 4, nasal isolates of ICU staff. The correlation between the presence of the operon and the presence of slime production in all groups (p<0.05). The correlation between the presence of the operon and the presence of slime production in all groups (p<0.001). The correlation between the presence of MecA and icaD (p<0.05).