Diagnostic yield of follow-up in patients undergoing surgery for non-metastatic colorectal cancer

Table 3 Factors associated with adherence to recommendations for the first follow-up colonoscopy and computed tomography scan, n (%)

		The 1st surveillance colonoscopy		P value	Multivariate analysis OR (95%CI)	P value	CT 1		P value	Multivariate analysis OR (95%CI)	P value
		Yes	No				Yes	No
Average age (Number of patients)		66.97 (394)	76.69 (131)	< 0.001	0.91 (0.89-0.94)	< 0.001	68.7 (483)	76.6 (56)	< 0.001	1.06 (1.03-1.10)	< 0.001
Sex	Male	245 (76.6)	75 (23.4)	0.32			299 (91.2)	29 (8.8)	0.14
	Female	149 (72.7)	56 (27.3)				184 (87.2)	27 (12.8)
TNM stage	I-II	248 (77.3)	71 (22.3)	0.05	1		298 (90.0)	33 (10.0)	0.69
	III	141 (70.1)	60 (29.9)		2.47 (1.46-4.18)	< 0.001	185 (88.9)	23 (11.1)
Location	Right colon	119 (73.0)	44 (27.0)	0.47			146 (85.9)	24 (14.1)	0.05	1
	Left colon	275 (76.0)	87 (24.0)				337 (91.3)	32 (8.7)		0.80 (0.44-0.15)	0.46
Surgery	Laparoscopy	111 (87.4)	16 (12.6)	< 0.001	1		122 (94.6)	7 (5.4)	0.03	1
	Laparotomy	283 (71.1)	115 (28.9)		2.59 (1.43-4.78)	0.002	361 (88.0)	49 (12.0)		2.03 (0.87-4.71)	0.10
Perioperative complications	Yes	42 (65.6)	22 (34.4)	0.06	1		59 (90.8)	6 (9.2)	0.68
	No	352 (76.4)	109 (23.6)		0.99 (0.52-1.88)	0.98	424 (89.5)	50 (10.5)
Postoperative complications	Yes	130 (68.8)	59 (31.2)	0.01	1		173 (89.2)	21 (10.8)	0.46
	No	264 (78.6)	72 (21.4)		0.76 (0.48-1.20)	0.24	310 (89.9)	35 (10.1)
Adjuvant chemotherapy	Yes	173 (84.8)	31 (15.2)	< 0.001	2.11 (1.18-3.78)	0.01	197 (96.1)	8 (3.9)	< 0.001	2.46 (1.09-5.54)	0.03
	No	221 (68.8)	100 (31.2)		1		286 (85.6)	48 (14.4)		1
Neoadjuvant radio-chemotherapy	Yes	63 (91.3)	6 (8.7)	< 0.001	2.18 (0.87-5.50)	0.01	69 (97.2)	2 (2.8)	0.03	2.29 (0.51-10.16)	0.28
	No	331 (72.6)	125 (27.4)		1		414 (88.5)	54 (11.5)		1

CT: Computed tomography; OR: Odds ratio; TNM: Tumor-node-metastasis.