Mousavi 2009.

Methods	Randomised Controlled Trial
Participants	Patients with chronic anal fissure
Interventions	Fissurectomy (30) versus Lateral internal sphincterotomy (32)
Outcomes	Persistence of pain/bleeding, fissure recurrence, major and minor incontinence
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	not stated
Other bias	Unclear risk	not stated if groups are comparable at baseline
Blinding of outcome assessment (detection bias) All outcomes	High risk	inadequate
Drop‐outs All outcomes	Unclear risk	indeterminate