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Table 1 Characteristics of gastrointestinal stromal tumors patients by three time periods, Taiwan, 1998-2008

From: The epidemiology of gastrointestinal stromal tumors in Taiwan, 1998–2008: a nation-wide cancer registry-based study

Age, years Time period
  1998-2001 N = 655 2002-2004 N = 846 2005-2008 N = 1485
  Male N = 376 Female N = 279 Male N = 464 Female N = 382 Male N = 801 Female N = 684
<50 100 (26.6%) 78 (28.0%) 115 (24.8%) 86 (22.5%) 159 (19.9%) 129 (18.9%)
50 to <60 70 (18.6%) 50 (17.9%) 89 (19.2%) 91 (23.8%) 191 (23.9%) 162 (23.7%)
60 to <70 108 (27.1%) 74 (26.5%) 116 (25%) 96 (25.1%) 200 (25.0%) 184 (26.9%)
70 to <80 78 (20.7%) 68 (24.4%) 118 (25.4%) 86 (22.5%) 182 (22.7%) 157 (23.0%)
>80 26 (6.9%) 9 (3.2%) 26 (5.6%) 23 (6.0%) 69 (8.6%) 52 (7.6%)
Median (min/max) 62 (26/87) 62 (23/88) 63 (19/89) 62 (18/91) 64 (19/96) 64 (22/94)
Location       
Stomach 199 (52.9%) 164 (58.8%) 217 (46.8%) 196 (51.3%) 395 (49.3%) 375 (54.8%)
Small intestine 143 (38.0%) 94 (33.7%) 177 (38.2%) 125 (32.7%) 289 (36.1%) 213 (31.1%)
Colon/rectum 30 (8.0%) 20 (7.2%) 39 (8.4%) 34 (8.9%) 45 (5.6%) 43 (6.3%)
Esophagus/othersa 4 (1.1%) 1 (0.4%) 31 (6.7%) 27 (7.1%) 72 (9.0%) 53 (7.8%)
  1. aOthers: retroperitoneum and unspecific sites.