Table 2.

Concordance Between Sequence-Based Typing Clonal Grouping Methods for S. aureus Clinical Isolates

Subgroup	Sample size	MLST STs with spa types with spa	MLST CCs with spa CCs
All
All isolates	366	0.906	0.966
95% CI		0.886–0.927	0.954–0.979
Age group
Children ≤18 years	116	0.899	0.97
95% CI		0.850–0.947	0.946–0.996
Adults ≥50 years	250	0.906	0.964
95% CI		0.884–0.928	0.948–0.979
Patient setting
Inpatient	68	0.89	0.962
95% CI		0.846–0.934	0.926–0.998
Outpatient	298	0.908	0.967
95% CI		0.884–0.932	0.953–0.981
Isolate source
Skin	287	0.893	0.967
95% CI		0.865–0.921	0.952–0.982
Nonskin	79	0.91	0.953
95% CI		0.866–0.955	0.916–0.991
Methicillin-susceptibility
MRSA	170	0.801	0.971
95% CI		0.747–0.855	0.947–0.995
MSSA	196	0.947	0.959
95% CI		0.934–0.960	0.945–0.972