Perioperative characteristics and outcomes of colorectal cancer in elderly patients

Table 2 Pathology and age group of the study participants, n (%)

Characteristics	65-69 years	70-74 years	75-79 years	80-84 years	85-89 years	χ2 (df)	P value
Preoperative						3.17 (4)	0.558
No	31 (41.9)	23 (31.1)	13 (17.6)	5 (6.8)	2 (2.7)
Yes	13 (54.2)	5 (20.8)	3 (12.5)	1 (4.2)	2 (8.3)
Treatment type						4.79 (8)	0.756
Neoadjuvant	7 (43.8)	7 (43.8)	2 (12.5)	0 (0)	0 (0)
Palliative surgery	1 (33.3)	1 (33.3)	1 (33.3)	0 (0)	0 (0)
Surgery	36 (45.6)	20 (25.3)	13 (16.5)	6 (7.6)	4 (5.1)
Operation type						9.43 (4)	0.046
Laparoscopy	26 (44.1)	21 (35.6)	10 (16.9)	1 (1.7)	1 (1.7)
Open surgery	18 (46.2)	7 (17.9)	6 (15.4)	5 (12.8)	3 (7.7)
PT stage						10.61 (12)	0.544
T1	1 (50.0)	0 (0)	1 (50.0)	0 (0)	0 (0)
T2	10 (50.0)	7 (35.0)	1 (5.0)	1 (5.0)	1 (5.0)
T3	17 (34.0)	16 (32.0)	4 (8.0)	3 (6.0)	3 (6.0)
T4	16 (61.5)	5 (19.2)	1 (3.8)	0 (0)	0 (0)
PN stage						16.83 (8)	0.027
N0	20 (44.4)	7 (15.6)	13 (28.9)	2 (4.4)	3 (6.7)
N1	11 (42.3)	11 (42.3)	1 (3.8)	3 (11.5)	0 (0)
N2	13 (48.1)	10 (37.0)	2 (7.4)	1 (3.7)	1 (3.7)
M stage						4.48 (4)	0.357
M0	11 (37.9)	8 (27.6)	5 (17.2)	2 (6.9)	3 (10.3)
M1	33 (47.8)	20 (29.0)	11 (15.9)	4 (5.8)	1 (1.4)
Stage						11.99 (12)	0.431
Stage 1	3 (42.9)	0 (0)	2 (28.6)	1 (14.3)	1 (14.3)
Stage 2	5 (35.7)	5 (35.7)	3 (21.4)	0 (0)	1 (7.1)
Stage 3	3 (37.5)	3 (37.5)	0 (0)	1 (12.5)	1 (12.5)
Stage 4	33 (47.8)	20 (29.0)	11 (15.9)	4 (5.8)	1 (1.4)
Tumour size (mm)	27.70 ± 25.11	17.80 ± 18.52	24.36 ± 21.22	21.98 ± 12.45	12.81 ± 4.82	-	0.341