Table 2.

Characteristics of male and female patients n (%)

Variables	Male (n = 7686)	Female (n = 4126)	P value1
Age (mean ± SD)	58.2 ± 14.3	57.0 ± 28.7	0.0141
Poor bowel cleansing	353 (4.6)	240 (5.8)	0.0041
History of abdominal or pelvic surgery	1231 (16)	1186 (28.7)	< 0.0001
Melanosis coli	179 (2.3)	259 (6.6)	< 0.0001
Inflammatory bowel disease	753 (9.8)	446 (10.8)	0.0845

¹Mann-Whitney U-test (for age) or Fisher's exact test (for others).