Ability to defer defaecation (minutes)
Study	Group	Measure	Patients	Baseline	Three months	'Off' period	'On' period	Change (%)	Follow‐up	Notes
Leroi 2005#	Group of 19 who chose 'on' following the crossover period	Median (range)	Baseline: 13 3 months: 13 'Off' period: 17 'On' period: 14 Follow‐up: 15	1 (1 to 2)	1.8 (1 to 3)	1.4 (1 to 3)	1.8 (1 to 3)	0.4 (29%)	1.9 (1 to 3)	1. P < 0.05: 3 months, 'off' period, 'on' period, follow‐up versus baseline
Leroi 2005#	Group of 5 who chose 'off' following the crossover period	Median (range)	Baseline: 4 3 months: 4 'Off' period: 5 'On' period: 4 Follow‐up: 4	1 (1)	1 (1 to 3)	1 (1 to 3)	1 (1 to 2)	0	1.2 (1 to 1.8)