Ram 2007.

Methods	RCT
Participants	108 Patients with Chronic anal fissure
Interventions	4 finger Anal dilation or left lateral internal sphincterotomy
Outcomes	Healing (or recurrence), satisfaction or minor incontinence
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	randomisation by hospital registration number ‐ inadequate
Blinding of outcome assessment (detection bias) All outcomes	High risk	inadequate
Drop‐outs All outcomes	Low risk	zero