Sørensen 2010#.

Methods	Randomised crossover trial Blinding: participant and investigator Follow‐up: 2 weeks Setting: single centre, Denmark Intention‐to‐treat analysis: no
Participants	Enrolled: 7 Age: 67 years (60 to 87) Gender: male (1); female (6). Duration of symptoms: not stated Inclusion criteria: not stated Exclusion criteria: not stated
Interventions	Sacral nerve stimulation A Intervention: stimulator 'on' for one week B Control: stimulator 'off' for one week No treatment‐free period between the weeks
Outcomes	Defaecations/week; faecal incontinence episodes/week; urge episodes/week; passive leakage/week; soiling/week; anal manometry
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	'shuffling envelopes'
Allocation concealment (selection bias)	Unclear risk	'shuffling envelopes'
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Participants and personnel blinded
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Examiners blinded
Incomplete outcome data (attrition bias) All outcomes	Low risk	No withdrawals
Selective reporting (reporting bias)	Unclear risk	No information
Other bias	Low risk	None identified