Table 1: Descriptive statistics of the study population ( = 12,546).

CharacteristicPercent of total valuea
1991–1996
( = 2122)
1997–2003
( = 5221)
2004–2010
( = 5203)

Sex0.1802
 Male52.6 53.7 54.9
 Female47.4 46.3 45.1
Site0.0034*
 Lower limb71.7 73.5 75.4
 Upper limb28.3 26.5 24.6
Hispanic <0.0001*
 Non-Hispanic90.7 88.8 87.1
 Spanish-Hispanic-Latino9.3 11.2 13.0
Radiation<0.0001*
 No49.7 48.645.2
 Yes48.848.8 523.0
 Unknown1.5 2.6 1.9
Surgery0.31
 No8.4 7.6 8.3
 Yes91.0 91.7 91.2
 Unknown0.6 0.7 0.5
Marital status0.141
 Single16.7 18.5 17.9
 Married58.2 57.5 58.0
 Other21.25 19.8 20.8
 Unknown3.9 4.2 3.4
Age<0.0001*
 <309.2 8.0 6.8
 30–5941.1 44.4 41.2
 60+49.7 47.6 52.0
Histology<0.0001*
 NOS10.7 12.3 22.3
 Fibromatous42.0 37.0 26.4
 Myxomatous0.4 0.6 1.3
 Lipomatous23.9 22.9 26.4
 Myomatous11.0 13.9 13.4
 Synovial7.5 8.3 6.4
 All other types4.6 5.1 4.3
Grade<0.0001*
 I14.4 14.2 18.9
 II17.2 16.6 18.2
 III14.9 18.5 22.7
 IV19.0 25.2 35.8
 Unknown34.5 25.5 4.5
Metastasis<0.0001*
 No86.1 86.9 85.1
 Yes9.1 9.4 14.9
 Unknown4.9 3.7 0
Tumor size<0.0001*
 <=5 cm30.6 30.232.4
 >5 cm46.8 49.5 64.9
 Unknown22.6 20.3 2.7

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