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Table 1 Patients’ characteristics

From: Population-based SEER trend analysis of overall and cancer-specific survival in 5138 patients with gastrointestinal stromal tumor

Variable Category All GIST
(N = 5138)
Location Stomach 3018 (58.7 %)
  Small intestine 1603 (31.2 %)
  Other: 517 (10.1 %)
  • Esophageal 29 (0.6 %)
  • Colon 139 (2.7 %)
  • Rectum 172 (3.3 %)
  • Appendix 3 (0.1 %)
  • Peritoneum 174 (3.4 %)
Size categories <5 cm 1280 (24.9 %)
  5 cm–9.9 cm 1678 (32.7 %)
  10 cm+ 1471 (28.6 %)
  Unknown 709 (13.8 %)
Size (cm) Median [IQR] 7.0 cm [4.5 to 11.8 cm]
Range 0.2–70 cm
N stage N− 4071 (79.2 %)
  N+ 264 (5.1 %)
  NX 803 (15.6 %)
Mitotic Counta <2 per 50 HPF 397 (7.7 %)
  2–5 per 50 HPF 171 (3.3 %)
  >5 per 50 HPF 159 (3.1 %)
  Unknown 4411 (85.9 %)
Surgery of primary No surgery of primary tumor 865 (16.8 %)
  Surgery of primary tumor 4263 (83.0 %)
  Unknown 10 (0.2 %)
Metastatic disease M0 4211 (82.0 %)
  M1: 927 (18.0 %)
   −M1, no surgery of metastasis −763 (14.8 %)
   −M1, surgery of metastasis −139 (2.7 %)
   −M1, surgery of metastasis −25 (0.5 %)
   unknown  
Year 1998 to 2002 1120 (21.8 %)
  2003 to 2005 1195 (23.3 %)
  2006 to 2008 1227 (23.9 %)
  2009 to 2011 1596 (31.1 %)
Gender Male 2709 (52.7 %)
  Female 2429 (47.3 %)
Age <50 1060 (20.6 %)
  50–64 1805 (35.1 %)
  65–79 1682 (32.7 %)
  80+ 591 (11.5 %)
Ethnicity Caucasian 3536 (68.8 %)
  African-American 920 (17.9 %)
  Other/Unknown 682 (13.3 %)
Marital status Married 3008 (58.5 %)
  Single 832 (16.2 %)
  Other/Unknown 1298 (25.3 %)
Cause of death Alive 3545 (69.0 %)
  Dead from cancer 1080 (21.0 %)
  Dead not from cancer 513 (10.0 %)
Follow-up (months) Median [IQR] 37.0 [14.0 to 74.0]
  1. a Mitotic count systematically recorded after 2009