Improvement in Overall Survival from Extremity Soft Tissue Sarcoma over Twenty Years

Table 1

Descriptive statistics of the study population ( = 12,546).

Characteristic	Percent of total			value^a
	1991–1996; ( = 2122)	1997–2003; ( = 5221)	2004–2010; ( = 5203)
Sex				0.1802
Male	52.6	53.7	54.9
Female	47.4	46.3	45.1
Site				0.0034^*
Lower limb	71.7	73.5	75.4
Upper limb	28.3	26.5	24.6
Hispanic				<0.0001^*
Non-Hispanic	90.7	88.8	87.1
Spanish-Hispanic-Latino	9.3	11.2	13.0
Radiation				<0.0001^*
No	49.7	48.6	45.2
Yes	48.8	48.8	523.0
Unknown	1.5	2.6	1.9
Surgery				0.31
No	8.4	7.6	8.3
Yes	91.0	91.7	91.2
Unknown	0.6	0.7	0.5
Marital status				0.141
Single	16.7	18.5	17.9
Married	58.2	57.5	58.0
Other	21.25	19.8	20.8
Unknown	3.9	4.2	3.4
Age				<0.0001^*
<30	9.2	8.0	6.8
30–59	41.1	44.4	41.2
60+	49.7	47.6	52.0
Histology				<0.0001^*
NOS	10.7	12.3	22.3
Fibromatous	42.0	37.0	26.4
Myxomatous	0.4	0.6	1.3
Lipomatous	23.9	22.9	26.4
Myomatous	11.0	13.9	13.4
Synovial	7.5	8.3	6.4
All other types	4.6	5.1	4.3
Grade				<0.0001^*
I	14.4	14.2	18.9
II	17.2	16.6	18.2
III	14.9	18.5	22.7
IV	19.0	25.2	35.8
Unknown	34.5	25.5	4.5
Metastasis				<0.0001^*
No	86.1	86.9	85.1
Yes	9.1	9.4	14.9
Unknown	4.9	3.7	0
Tumor size				<0.0001^*
<=5 cm	30.6	30.2	32.4
>5 cm	46.8	49.5	64.9
Unknown	22.6	20.3	2.7

Significant on a level.
NOS: not otherwise specified.
^a value for testing of significance between time periods.