Pre-study period	Study period
Number of methicillin sensitive Staphylococcus aureus (MSSA)	9	9
Number of MSSA that were not thought to be significant initially	2 (22.2%)	5 (55.6%)
Number of methicillin resistant Staphylococcus aureus (MRSA)	1	2
Number of MRSAs not thought to be significant initially	0 (0%)	0 (%)
Number of GPC not MSSA or MRSA on PCR or culture	51	89
Number of above not thought to be significant initially	48 (94%)	80 (90%)
Total number of BC with likely staphylococci	71	100
Number where advice was changed after the culture result was available	8 (71%)	14 (14%)
Thought to be significant isolates but were not after culture	6 (8.4%)	9 (9%)
Thought not to be significant but were after culture	2 (2.8%)	5 (5%)