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Volume 11, Number 10—October 2005

Research

Isolate Removal Methods and Methicillin-resistant Staphylococcus aureus Surveillance

Fenfang Li*Comments to Author , Tracy L. Ayers†, Sarah Y. Park†, F. DeWolfe Miller*, Ralph MacFadden†, Michele Nakata†, Myra Ching Lee†, and Paul V. Effler†
Author affiliations: *University of Hawaii School of Medicine, Honolulu, Hawaii, USA; †Hawaii Department of Health, Honolulu, Hawaii, USA

Main Article

Table 3

Effect of duplicate isolate removal on Staphylococcus aureus susceptibility to oxacillin, by clinical setting*

Method ICU
Non-ICU
Outpatient
No. isolates No. susceptible (%, 95% CI) No. isolates No. susceptible (%, 95% CI) No. isolates No. susceptible (%, 95% CI)
No removal 843 465 (55, 52–59) 3,894 1,971 (51, 49–52) 9,858 7,281 (74, 73–75)
Cerner, 3 d 712 387 (54, 51–58) 3,363 1,705 (51, 49–52) 9,590 7,101 (74, 73–75)
NCCLS, 3 d 708 384 (54, 51–58) 3,328 1,682 (51, 49–52) 9,559 7,078 (74, 73–75)
Cerner, 10 d 629 355 (56, 53–60) 3,090 1,614 (52, 50–54) 9,500 7,045 (74, 73–75)
NCCLS, 10 d 616 352 (57, 53–61) 3,038 1,584 (52, 50–54) 9,461 7,020 (74, 73–75)
Cerner, 30 d 589 345 (59, 55–63) 2,849 1,569 (55, 53–57) 9,280 6,907 (74, 74–75)
NCCLS, 30 d 574 341 (59, 55–63) 2,772 1,534 (55, 53–57) 9,222 6,875 (75, 74–75)
Most resistant 545 317 (58, 54–62) 2,426 1,355 (56, 54–58) 8,427 6,295 (75, 74–76)
Cerner, 90 d 574 339 (59, 55–63) 2,681 1,525 (57, 55–59) 8,905 6,667 (75, 74–76)
NCCLS, 90 d 558 335 (60, 56–64) 2,563 1,480 (58, 56–60) 8,802 6,617 (75, 74–76)
Cerner, 365 d 564 336 (60, 56–64) 2,578 1,485 (58, 56–60) 8,589 6,444 (75, 74–76)
NCCLS, 365 d 545 332 (61, 57–65) 2,426 1,420 (59, 57–60) 8,427 6,368 (76, 75–76)
Most susceptible 545 334 (61, 57–65) 2,426 1,468 (61, 59–62) 8,427 6,433 (76, 75–77)

*d, days; ICU, intensive care unit; NCCLS, National Committee for Clinical Laboratory Standards; CI, confidence interval.

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