Volume 11, Number 10—October 2005
Research
Isolate Removal Methods and Methicillin-resistant Staphylococcus aureus Surveillance
Fenfang Li*
, Tracy L. Ayers†, Sarah Y. Park†, F. DeWolfe Miller*, Ralph MacFadden†, Michele Nakata†, Myra Ching Lee†, and Paul V. Effler†
, Tracy L. Ayers†, Sarah Y. Park†, F. DeWolfe Miller*, Ralph MacFadden†, Michele Nakata†, Myra Ching Lee†, and Paul V. Effler†
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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