TABLE 1.
Yr and strain type | All hospital unitsa |
ICUsb |
Non-ICUsc |
||||||
---|---|---|---|---|---|---|---|---|---|
No. of: |
Ratiod | No. of: |
Ratiod | No. of: |
Ratiod | ||||
Patients | Isolates | Patients | Isolates | Patients | Isolates | ||||
1996 | |||||||||
MRSA | 144 | 298 | 2.07 | 42 | 94 | 2.24 | 102 | 204 | 2.00 |
MSSA | 450 | 631 | 1.40 | 79 | 114 | 1.44 | 371 | 517 | 1.39 |
1997 | |||||||||
MRSA | 133 | 269 | 2.02 | 38 | 86 | 2.26 | 95 | 183 | 1.93 |
MSSA | 455 | 613 | 1.35 | 81 | 120 | 1.48 | 374 | 493 | 1.32 |
1998 | |||||||||
MRSA | 143 | 236 | 1.65 | 48 | 76 | 1.58 | 95 | 160 | 1.68 |
MSSA | 424 | 589 | 1.39 | 70 | 97 | 1.39 | 354 | 492 | 1.39 |
1999 | |||||||||
MRSA | 136 | 248 | 1.82 | 37 | 66 | 1.78 | 99 | 182 | 1.84 |
MSSA | 391 | 515 | 1.32 | 53 | 78 | 1.47 | 338 | 437 | 1.29 |
2000 | |||||||||
MRSA | 112 | 195 | 1.74 | 29 | 53 | 1.83 | 83 | 142 | 1.71 |
MSSA | 257 | 345 | 1.34 | 55 | 72 | 1.31 | 202 | 273 | 1.35 |
2001 | |||||||||
MRSA | 192 | 391 | 2.04 | 47 | 105 | 2.23 | 145 | 286 | 1.97 |
MSSA | 390 | 514 | 1.32 | 52 | 83 | 1.60 | 338 | 431 | 1.26 |
All years | |||||||||
MRSA | 860 | 1,637 | 1.90 | 241 | 480 | 1.99 | 619 | 1,157 | 1.87 |
MSSA | 2,367 | 3,207 | 1.35 | 390 | 564 | 1.45 | 1,977 | 2,643 | 1.34 |
Analysis of patients with S. aureus (both MRSA and MSSA) from all units in the hospital, including ICUs but not including outpatient clinics or 1-day surgery.
Analysis of patients with S. aureus (both MRSA and MSSA) infection only from ICUs that included surgical ICUs, medical or trauma ICUs, burn units, pediatric ICUs, and neonatal ICUs.
Analysis of patients with S. aureus (both MRSA and MSSA) from all units in the hospital, excluding the ICUs listed in columns 5 to 7.
The ratio expressed is the number of isolates detected divided by the number of patients during the analysis period.