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Table 1 Demographic characteristics of patients undergoing limb salvage surgery vs. amputation

From: Limb salvage versus amputation in patients with osteosarcoma of the extremities: an update in the modern era using the National Cancer Database

  Type of Surgery   p value
Limb Salvage Surgery Amputation Total
n % n % n %
Age; median (IQR) 17 (13–28) 21 (14–45) 18 (13–32) < 0.0001
< 20 1135 61.2% 267 45.5% 1402 57.4% < 0.0001
20–39 399 21.5% 152 25.9% 551 22.6%
40–59 199 10.7% 98 16.7% 297 12.2%
60+ 122 6.6% 70 11.9% 192 7.9%
Sex
 Male 1095 59.0% 377 64.2% 1472 60.3% 0.025
 Female 760 41.0% 210 35.8% 970 39.7%
Race
 White 1398 75.4% 436 74.3% 1834 75.1% 0.923
 Black 295 15.9% 98 16.7% 393 16.1%
 Asian/Pacific Islander 80 4.3% 28 4.8% 108 4.4%
 Other/Unknown 82 4.4% 25 4.3% 107 4.4%
Insurance Status
 Uninsured 69 3.9% 33 5.7% 102 4.3% < 0.0001
 Insured 1207 67.5% 316 54.9% 1523 64.4%
 Medicaid 418 23.4% 168 29.2% 586 24.8%
 Medicare 94 5.3% 59 10.2% 153 6.5%
Zipcode Income
 < $38,000 345 18.8% 105 18.2% 450 18.7% 0.002
 $38,000–$47,999 398 21.7% 158 27.4% 556 23.1%
 $48,000–$62,999 476 26.0% 163 28.3% 639 26.5%
 $63,000+ 615 33.5% 150 26.0% 765 31.7%
Zipcode Education
 21% or more 381 20.8% 112 19.4% 2009 85.1% 0.258
 13–20.9% 443 24.1% 163 28.3% 316 13.4%
 7–12.9% 568 31.0% 169 29.3% 36 1.5%
 < 7% 443 24.1% 132 22.9% 575 23.8%
Urban
 Metro 1539 85.8% 470 82.7% 2817 85.2% 0.052
 Urban 232 12.9% 84 14.8% 436 13.2%
 Rural 22 1.2% 14 2.5% 54 1.6%
Distance from Hospital (Miles); mean (95% CI) 70.4 (63.30–77.53) 59.4 (51.20–67.65) 67.8 (62.03–73.55) 0.1103
Year of Diagnosis
 < 2006 279 15.0% 97 16.5% 376 15.4% 0.067
 2006–2010 748 40.3% 260 44.3% 1008 41.3%
 2011–2015 828 44.6% 230 39.2% 1058 43.3%
Total 1855 75.96% 587 24.04% 2442 100%