Changes in Soft-Tissue Sarcoma Treatment Patterns over Time: A Population-Based Study in a Country with Universal and Centralized Healthcare

Table 1

Demographic information of soft-tissue sarcoma patients.

Characteristics	2006–2010		2011–2015
Total Ontario sarcoma patients	2217		2479
Age group
<35	310	14.0%	269	10.9%
35–49	396	17.9%	392	15.8%
50–59	362	16.3%	436	17.6%
60–69	396	17.9%	492	19.8%
70–79	386	17.4%	470	19.0%
80+	367	16.6%	420	16.9%
Gender
Female	942	42.5%	1050	42.4%
Male	1275	57.5%	1429	57.6%
Most common subtypes
Liposarcoma^¥	356	16.1%	518	20.9%
Malignant fibrous histiocytoma	250	11.3%	145	5.8%
Leiomyosarcoma	240	10.8%	300	12.1%
Giant-cell sarcoma	91	4.1%	189	7.6%
Fibromyxosarcoma	66	3.0%	165	6.7%
Topography (ICD topography code)
Lower limb (C40.2, C49.2)	678	30.6%	809	32.6%
Upper limb (C40.0, C40.1, C49.1)	294	13.3%	311	12.5%
Axial	1245	56.2%	1359	54.8%
Charlson–Deyo comorbidity score (1–18)
Median	3.0		3.0
Mean	3.7		3.6
Stage
I	264	11.9%	391	15.8%
II	238	10.7%	295	11.9%
III	199	9.0%	215	8.7%
IV	158	7.1%	155	6.3%
Not reported	1356	61.3%	1423	57.4%
Income quintile^ˠ σ
Lowest	401	18.1%	396	16.0%
2^nd	415	18.7%	463	18.7%
3^rd	417	18.8%	499	20.1%
4^th	470	21.2%	561	22.6%
Highest	505	22.8%	546	22.0%
Place of residence^σ
Urban	1917	86.5%	2195	88.5%
Rural	298	13.4%	281	11.3%

See Appendix for the full list of sarcoma subtypes. ^ˠBased on nearest neighborhood census information. ^σProportion of missing data is 0.1% for place of residence and 0.3% for income quintile. ^¥Liposarcoma subtypes include “dedifferentiated,” “pleomorphic,” “round cell,” “mixed,” and “NOS.”