Table 1 Susceptibility of E. coli, S. aureus , and S. pneumoniae isolates by patient age, Mayo Clinic Rochester, MN
All patients | <18 y | 18-64 y | ≥65 y | p-value | |
|---|---|---|---|---|---|
E. coli | n = 3425 | n = 310 | n = 1465 | n = 165 | |
Ampicillin | 55% | 48% | 55% | 56% | 0.048 |
AMP-SLB | 48% | 40% | 48% | 50% | 0.01 |
Cefazolin | 91% | 93% | 91% | 91% | 0.47 |
Ceftriaxone | 96% | 96% | 96% | 98% | 0.24 |
Gentamicin | 91% | 95% | 92% | 90% | 0.012 |
Ciprofloxacin | 77% | 94% | 81% | 71% | <0.001 |
TMP-SMX | 75% | 75% | 74% | 76% | 0.29 |
Nitrofurantoin | 97% | 99% | 97% | 97% | 0.18 |
S. aureus | N = 3046 | N = 409 | N = 1552 | N = 108 | |
Oxacillin or Cefazolin | 67% | 78% | 70% | 59% | <0.001 |
Clindamycin | 66% | 82% | 69% | 57% | <0.001 |
Levofloxacin | 68% | 90% | 73% | 52% | <0.001 |
TMP-SMX | 99% | 100% | 99% | 99% | 0.054 |
S. pneumoniae | N = 499 | N = 139 | N = 203 | N = 157 | |
Penicillin (IV) | 98% | 97% | 98% | 99% | 0.61 |
Penicillin (oral) | 58% | 45% | 60% | 67% | 0.001 |
Ceftriaxone (non-CNS) | 98% | 96% | 98% | 99% | 0.101 |
Ceftriaxone (CNS) | 87% | 74% | 92% | 92% | <0.001 |
Tetracycline | 73% | 60% | 81% | 74% | <0.001 |
Erythromycin | 52% | 37% | 60% | 54% | <0.001 |
Levofloxacin | 98% | 100% | 99% | 96% | 0.019 |
TMP-SMX | 65% | 51% | 69% | 75% | <0.001 |