Table 1. Staphylococcus aureus–related discharge diagnoses, United States, 1999–2000, by patient age and infection site*.
| Discharge diagnosis | Age (y) |
||||
|---|---|---|---|---|---|
| <14 | 15–44 | 45–64 | >65 | Total† | |
| S. aureus septicemias | 2,918 | 12,272 | 20,028 | 38,948 | 74,166 |
| Proportion of methicillin-resistant isolates from blood culture | 0.144 | 0.317 | 0.392 | 0.495 | 0.424 |
| MRSA septicemias | 420 | 3,890 | 7,851 | 19,279 | 31,440 |
| S. aureus pneumonias | 2,328 | 5,582 | 6,926 | 41,427 | 56,263 |
| Proportion of methicillin-resistant isolates from lower respiratory culture | 0.195 | 0.333 | 0.467 | 0.586 | 0.530 |
| MRSA pneumonias | 454 | 1,859 | 3,234 | 24,276 | 29,823 |
| Other S. aureus infections | 14,290 | 39,222 | 40,496 | 67,105 | 161,113 |
| Proportion of methicillin-resistant isolates from other culture sites | 0.160 | 0.279 | 0.378 | 0.539 | 0.402 |
| Other MRSA infections | 2,286 | 10,943 | 15,307 | 36,170 | 64,706 |
*MRSA, methicillin-resistant S. aureus. †Due to rounding of methicillin-resistant proportions, total MRSA infections may differ slightly when estimates are calculated across category groups by row (i.e., age) compared with column (i.e., infection site).