Clinical features of post-colonoscopy colorectal cancer and real-world multi-scale correlation analysis

Table 2 Clinical characteristics of post-colonoscopy colorectal cancer, n (%)

Characteristic	CRC surgery history		P value
	Absent (n = 23)	Present (n = 16)
Sex			0.1071
Male	13 (56.52)	13 (81.25)
Female	10 (43.48)	3 (18.75)
Age			0.7342
< 60	6 (26.09)	5 (31.25)
≥ 60	17 (73.91)	11 (68.75)
Reason			0.2602
Poor preparation	4 (17.39)	2 (12.50)
Exposure error	17 (73.91)	10 (62.50)
Biopsy error	2 (8.70)	1 (6.25)
Judgement error	0 (0.00)	3 (18.75)
Location			< 0.0012
Ileocecal region	1 (4.35)	3 (18.75)
Ascending colon	3 (13.04)	0 (0.00)
Transverse colon	1 (4.35)	0 (0.00)
Descending colon	2 (8.70)	2 (12.50)
Sigmoid colon	11 (47.83)	1 (6.25)
Rectum	5 (21.74)	1 (6.25)
Anastomotic site	0 (0.00)	9 (56.25)
Differentiation			0.1172
Well-differentiated	1 (4.35)	4 (25.00)
Moderately differentiated	15 (65.22)	6 (37.50)
Poorly differentiated	7 (30.43)	6 (37.50)
Missed diagnosis duration (month), mean ± SD	22 ± 10	16 ± 8	0.0393

¹Pearson’s χ² test.

²Fisher’s exact test.

³Welch two sample t-test.

CRC: Colorectal cancer.