Table 3. All-cause mortality and chondrosarcoma-specific mortality for each prognostic factor and categorical variable.

Characteristics	All-cause mortality							Chondrosarcoma-specific mortality
	Total	Dead		Alive		P		Total	Dead		Alive		P
		N	%	N	%				N	%	N	%
Total	1,128	264	23.4	864	76.6	–		1,015	151	14.9	864	85.1	–
Age at diagnosis (years)						<0.001							<0.001
≤55	568	67	11.8	501	88.2			548	47	8.6	501	91.4
56–73	402	114	28.4	288	71.6			360	72	20.0	288	80.0
≥74	158	83	52.5	75	47.5			107	32	29.9	75	70.1
Gender						0.002							0.011
Female	493	94	19.1	399	80.9			452	53	11.7	399	88.3
Male	635	170	26.8	465	73.2			563	98	17.4	465	82.6
Race						0.708							0.460
White	989	235	23.8	754	76.2			891	137	15.4	754	84.6
Black	76	15	19.7	61	80.3			68	7	10.3	61	89.7
Other	63	14	22.2	49	77.8			56	7	12.5	49	87.5
Primary site						<0.001							<0.001
Upper limb	216	32	14.8	184	85.2			198	14	7.1	184	92.9
Lower limb	329	97	29.5	232	70.5			294	62	21.1	232	78.9
Axial	468	119	25.4	349	74.6			418	69	16.5	349	83.5
Other	115	16	13.9	99	86.1			105	6	5.7	99	94.3
Histological type						<0.001							<0.001
Conventional chondrosarcoma	934	164	17.6	770	82.4			856	86	10.0	770	90.0
Myxoid chondrosarcoma	54	12	22.2	42	77.8			48	6	12.5	42	87.5
Dedifferentiated chondrosarcoma	109	83	76.1	26	23.9			84	58	69.0	26	31.0
Other	31	5	16.1	26	83.9			27	1	3.7	26	96.3
Grade						<0.001							<0.001
I	399	36	9.0	363	91.0			383	20	5.2	363	94.8
II	480	95	19.8	385	80.2			429	44	10.3	385	89.7
III	146	61	41.8	85	58.2			122	37	30.3	85	69.7
IV	103	72	69.9	31	30.1			81	50	61.7	31	38.3
Tumor size (mm)						<0.001							<0.001
≤72	554	67	12.1	487	87.9			519	32	6.2	487	93.8
73–117	223	60	26.9	163	73.1			199	36	18.1	163	81.9
≥118	204	90	44.1	114	55.9			171	57	33.3	114	66.7
Other	147	47	32.0	100	68.0			126	26	20.6	100	79.4
Metastasis						<0.001							<0.001
Yes	68	57	83.8	11	16.2			60	49	81.7	11	18.3
No	1060	207	19.5	853	80.5			955	102	10.7	853	89.3
Surgery						<0.001							<0.001
Yes	1014	202	19.9	812	80.1			923	111	12.0	812	88.0
No	114	62	54.4	52	45.6			92	40	43.5	52	56.5
RT						<0.001							<0.001
Yes	159	62	39.0	97	61.0			135	38	28.1	97	71.9
No	969	202	20.8	767	79.2			880	113	12.8	767	87.2
CT						<0.001							<0.001
Yes	84	54	64.3	30	35.7			76	46	60.5	30	39.5
No	1044	210	20.1	834	79.9			939	105	11.2	834	88.8
Treatment method						<0.001							<0.001
Surgery	850	139	16.4	711	83.6			780	69	8.8	711	91.2
No surgery and no RT and no CT	66	27	40.9	39	59.1			52	13	25.0	39	75.0
RT	26	17	65.4	9	34.6			19	10	52.6	9	47.4
CT	15	13	86.7	2	13.3			14	12	85.7	2	14.3
Surgery and RT	102	27	26.5	75	73.5			88	13	14.8	75	85.2
Surgery and CT	38	23	60.5	15	39.5			34	19	55.9	15	44.1
RT and CT	7	5	71.4	2	28.6			7	5	71.4	2	28.6
Surgery and RT and CT	24	13	54.2	11	45.8			21	10	47.6	11	52.4

RT, radiotherapy; CT, chemotherapy.