Table 2.

Relationship between surgery type and survival outcome in patients with chondrosarcoma from 1973–2012 according to stage and grade.

	Stage			Grade				All (n = 2016)
	Localized	Regional	Distant	Well	Moderately	Poorly	Undifferentiated
Number
No surgery	75	62	51	77	70	24	17	188
Local excision	535	208	31	397	321	48	8	774
Radical excision	456	327	46	328	373	93	35	829
Amputation	79	130	16	49	117	39	20	225
Order of outcome
Best	2	3	2	2	2	3	3	2
Better	3	2	3	3	3	2	2	3
Worse	4	4	4	4	4	4	4	4
Worst	1	1	1	1	1	1	1	1
Significance
1 vs. 2	P < 0.001	P < 0.001	P < 0.001	P < 0.001	P < 0.001	P < 0.001	0.167	P < 0.001
1 vs. 3	P < 0.001	P < 0.001	P < 0.001	P < 0.001	P < 0.001	P < 0.001	0.001	P < 0.001
1 vs. 4	0.001	0.266	0.093	0.104	P < 0.001	0.036	0.240	P < 0.001
2 vs. 3	0.041	0.712	0.826	0.200	0.511	0.239	0.407	0.029
2 vs. 4	0.104	P < 0.001	0.002	P < 0.001	0.014	0.023	0.813	P < 0.001
3 vs. 4	0.649	P < 0.001	0.003	0.006	0.039	P < 0.001	0.070	P < 0.001

P values were calculated by log-rank tests. Bold represents statistical significance, P < 0.05.

1: No surgery; 2: Local excision; 3: Radical excision; 4: Amputation.