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| Methods | Randomized Controlled Trial | |
| Participants | Patients with chronic fissure | |
| Interventions | After Sphincterotomy, primary wound closure versus open b\packing | |
| Outcomes | Wound infection, wound healing time, bleeding | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | High risk | randomisation method not specified |
| Blinding of outcome assessment (detection bias) All outcomes | High risk | not stated |
| Drop‐outs All outcomes | Low risk | zero |
