Methods	RCT
Participants	55 women with CIN
Interventions	Radical diathermy LLETZ
Outcomes	Duration of blood loss Duration of watery/ blood stained discharge Duration of yellow discharge Duration of upper abdominal pain Duration of lower abdominal pain Duration of deep pelvic pain Duration of vaginal pain
Notes
Risk of bias
Item	Authors’ judgement	Description
Adequate sequence generation?	Yes	Patients were, “assigned a treatment using … random numbers table”
Allocation concealment?	Yes	“They were then assigned a treatment using sealed envelopes”
Blinding? All outcomes	Yes	“The treatments were colour coded so the patients and the investigators collecting and analysing the data were blinded to the treatment mode”
Incomplete outcome data addressed? All outcomes	Yes	% of women analysed: 48/55 (87%) By treatment arm Radical diathermy: 24/26 (92%) LLETZ: 24/29 (83%)
Free of selective reporting?	Unclear	Insufficient information to permit judgement
Free of other bias?	Unclear	Insufficient information to assess whether an important risk of bias exists