Molecular Typing of Methicillin Resistant Staphylococcus aureus Clinical Isolates on the Basis of Protein A and Coagulase Gene Polymorphisms

Table 4

Discriminatory indices (DIs) of the binary typing method (R) compared with the coa and spa genotyping techniques and antibiogram for the 75 MRSA strains.

Method	Types	Size (%) of largest type	Discriminatory index (DI)
coa gene PCR typing	10	44 (58.7%)	0.64
spa gene PCR	11	37 (49.3%)	0.68
coa/HaeIII RFLP	12	44 (58.7%)	0.64
spa/HaeII RFLP	12	37 (49.3%)	0.68
Binary typing (R)	22	27 (36%)	0.836
Antibiotyping	32	12 (16%)	0.948