| Methods |
Randomised controlled trial. Randomisation method not stated.
Double‐blinded. Unclear blinding of outcome‐assessor. |
| Participants |
116 eligible patients. 16 excluded before the code was broken. 111 patients, 51 males and 49 females enrolled in the study.
Age‐range 5‐73.
Mean 22 +/‐ 15 (s.d.) in treatment group, +/‐ 14 (s.d.) in placebo group. |
| Interventions |
Treatment group: Metronidazole 500 mg in 100 ml saline i.v preoperatively.
Placebo group: Saline 100 ml i.v preoperatively. |
| Outcomes |
Wound infection (Discharge of pus form the wound). |
| Notes |
Draining of the wound depending on surgeon. 5 patients in the treatment group were drained, none contracted wound infection. 9 patients in the placebo group were drained, 3 contracted wound infection. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Allocation concealment? |
Unclear risk |
B ‐ Unclear |
