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Table 1 Trends in baseline demographic and pathological characteristics of the study population (2000–2016)

From: Gastrointestinal mixed adenoneuroendocrine carcinoma: a population level analysis of epidemiological trends

VariableTotalAppendixCecumOthera
No. of patients (n)58135456171
Median age (years)595761.563
Gender, n (%)
 Women274 (47.2)176 (49.7)25 (44.6)73 (42.7)
 Men307 (52.8)178 (50.3)31 (55.4)98 (57.3)
Race, n (%)
 White472 (81.2)307 (86.7)44 (78.6)121 (70.8)
 Black67 (11.5)33 (9.3)9 (16.1)25 (14.6)
 Otherb42 (7.3)14 (4.0)3 (5.3)25 (14.6)
SEER historic stage, n (%)
 Localized157 (27.0)101 (28.5)7 (12.5)49 (28.7)
 Regional234 (40.3)135 (38.1)25 (44.6)74 (43.3)
 Distant184 (31.7)114 (32.2)23 (41.1)47 (27.5)
 Unstaged6 (1.0)4 (1.1)1 (1.8)1 (0.5)
Grade, n (%)
 Well differentiated52 (9.0)32 (9.0)1 (1.8)19 (11.1)
 Moderately differentiated88 (15.1)45 (12.7)8 (14.3)35 (20.5)
 Poorly differentiated205 (35.3)125 (35.3)32 (57.1)48 (28.1)
 Undifferentiated46 (7.9)15 (4.3)6 (10.7)2514.6)
 Unknown190 (32.7)137 (38.7)9 (16.1)44 (25.7)
  1. aOther group include: stomach:30 individuals, Duodenum:11 individuals, Jejunum:1 individual, Ileum:11 individuals, Small intestine:5 individuals, Ascending colon:24 individuals, Transverse colon:10 individuals, Descending colon:2 individuals, Sigmoid colon:20 individuals, Overlapping lesion of colon:5 individuals, Colon:4 individuals, Rectosigmoid junction:3 individuals, Rectum:45 individuals
  2. bOther race include: American Indian/Alaskan Native, Asian/Pacific Islander