Primary and secondary outcome measures per protocol analysis*
| Cephalexin (n=23) | Placebo (n=25) | Risk difference (95% CI) | p Value | |
|---|---|---|---|---|
| Number of infections | 2 | 9 | 0.24 (0.06 to 1.00) | 0.039 |
| Infection rate (95% CI) | 8.7 (1.1 to 28.0) | 36.0 (18 to 57.5) | NA | |
| Prescription of antibiotics | 2 (8.7%) | 6(24.0%) | 0.36 (0.08 to 1.62) | 0.249 |
| Number of additional follow-up visits required | ||||
| Median | 0 [0–0] | 0 [0–1] | NA | 0.058 |
| Total | 5 | 26 | NA | |
95% CI for infection rates are the Clopper-Pearson interval.
*Data are median [IQR] or number (%) unless otherwise stated; 95% CI for infection rate are the Clopper-Pearson interval; p values are Fisher’s exact test or the Mann-Whitney U test for categorical and continuous variables, respectively.
NA, not available.