TABLE 2.

Discriminatory power of repeat-containing regions of four genes and their partial sequences in comparison to other typing methods

Typing method, gene, or partial gene sequencea	Discriminatory power of gene or partial sequence for:
	All isolates (n = 144)		Related MRSA (n = 48)		Diverse MRSA (n = 48)
	No. of genotypes	IDb	No. of genotypes	ID	No. of genotypes	ID
PFGE	63	0.96	17	0.86	41	0.99
clfB_spa_3p500	57	0.94	17	0.77	35	0.98
clfA_spa_3p500	48	0.94	13	0.83	30	0.97
clfA_clfB_3p500	48	0.92	14	0.67	29	0.97
spa	42	0.90	8	0.59	30	0.97
spa_3p500	39	0.90	8	0.59	29	0.97
clfB	54	0.89	12	0.47	31	0.97
clfA	35	0.87	9	0.51	22	0.93
clfB_3p500	41	0.86	11	0.38	27	0.96
clfA_3p500	27	0.83	8	0.51	17	0.90
clfB_5p500	31	0.83	6	0.24	19	0.94
clfA_5p500	26	0.79	3	0.08	19	0.91
fnbA	20	0.76	6	0.48	15	0.82
spa_5p500	14	0.73	2	0.04	12	0.85
fnbA_3p500	16	0.72	3	0.29	12	0.80
fnbA_5p500	14	0.65	3	0.19	11	0.76
MLST	NDc	ND	ND	ND	21	0.93

^aPartial gene sequences (500 bp) of the 3′ or 5′ region of the genes are indicated by 3p500 or 5p500, respectively.

^bThe index of discrimination (ID) was calculated by the method of Hunter (13).

^cND, not determined.