Incidence Rate Ratios for Achilles Tendon Rupture by Antibiotic Type
| Antibiotic Type | Incidence Rate Ratio (95% CI) |
|---|---|
| First- and second-generation fluoroquinolones | 2.94 (1.90-4.54) |
| Third-generation fluoroquinolones | 1.05 (0.33-3.37) |
| Nonfluoroquinolones | 1.08 (0.80-1.47) |
Note: For each patient, comparator was the period with no antibiotic exposure.