Table 3. Short-term outcome, long-term outcome and cause of death in colorectal cancer patients according to age group.

Variables	N	<60 years (n=47), n (%)	60–79 years (n=218), n (%)	≥80 years (n=81), n (%)	P value
Short-term outcome
Postoperative mortality within 30 days	2	0 (0)	0 (0)	2 (2.5)	0.072
Postoperative morbidity within 30 days (Clavien-Dindo ≥ III)	33	2 (4.3)	18 (8.3)	13 (16.0)	0.068
Postoperative hospital stay					0.028
<21 days	254	41 (87.2)	159 (72.9)	54 (66.7)
≥21 days	92	6 (12.8)	59 (27.1)	27 (33.3)
Survival at 1 year post-surgery					0.001
Alive	327	46	212	69
Dead	19	1	6	12
Long-term outcome
5-year survival	92	90.8%	86.6%	52.1%	<0.001
5-year disease-free survival	77	78.4%	81.9%	81.7%	0.875
Recurrence at 5 years	59	9	38	12	0.797
Number of deaths at 5 years	60	4	26	30
Cause of death					<0.001
Colorectal cancer	30	3 (75.0)	18 (69.2)	9 (30.0)
Other	30	1 (25.0)	8 (30.8)	21 (70.0)
Cause of other deaths
Respiratory disease	10		3	7
Cardiovascular disease	8		3	5
Other primary cancer	3		1	2
Sepsis	3			3
Other	6	1	1	4