Table 6. Length of stay and hospital charges a within 90 days of surgery attributable to surgical site infection (SSI) due to methicillin resistant Staphylococcus aureus (MRSA): SSI due to MRSA compared to SSI due to MSSA.
| Length of Stay Least Squares Mean (IQR) | Charges Least Squares Mean (IQR) | |||
| Unadjusted | Adjusted b | Unadjusted | Adjusted c | |
| SSI due to MRSA | 24.3 (21.7–26.8) | 23.7 (21.3–26.0) | 105,214 (89,558–120,871) | 99,466 (86,352–112,580) |
| SSI due to MSSA | 17.4 (14.6–20.2) | 18.1 (15.5–20.7) | 68,835 (52,164–85,506) | 75,353 (61,351–89,355) |
| Attributable difference | 6.86 (3.07–10.4) | 5.5 (1.97–9.11) | 36,379 (13,509–59,250) | 24,113 (4,521–43,704) |
a
Charges were normalized to year 2003 by adjusting for inflation at a rate of 0.03% per year.
b
Adjusted for surgical duration >75th NNIS percentile, ASA score ≥3, procedure at tertiary care hospital, Charlson score ≥3, and surgery on same day as admission.
c
Adjusted for surgical duration >75th NNIS percentile, ASA score ≥3, procedure at tertiary care hospital, Charlson score ≥3, surgery on same day as admission, and coronary artery bypass graft surgery.