Table 1.

Characteristics of the patients

	Failure (n = 101)	Success (n = 101)	p-value
Male	49	43	NS
Age (years)
<40	13	12	NS
40–59	45	44
60–74	30	40
>75	12	4
Body mass index (kg/m2)
<30	82	79	NS
≥75	18	21
History
Digestive surgery	23	16	NS
Minor pelvic surgery	13	16
Pelvic irradiation	3	3
Chronic disease	40	33	NS
Constipation	42	26	<0.02
Long-term treatment
Any treatment	35	28	NS
Antihypertensive drug	20	24	NS
Antidiabetic drug	7	9	NS
Antidepressant/antipsychotic	17	9	<0.09
Previous colonoscopies
Mean n	1.8	1.9	NS
Previous failures	22	8	NS

Values are % unless otherwise stated.

NS, non significant.