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Table 1 Characteristics of patient population

From: Clinical characteristics of young-age onset gastric cancer in Korea

  No. (%)
No. of patients 163
Sex
 Male : Female 80 (49.1) : 83 (50.9)
Age (years) median 35 (range 22 ~ 39)
 22 ~ 30 29 (17.8)
 31 ~ 35 53 (31.5)
 36 ~ 39 81 (49.7)
Smoking
 Never smoker 111 (68.1)
 Ex-smoker 7 (4.3)
 Current smoker 45 (27.6)
Body mass index median 21.89 (range 15.25 ~ 29.76)
 < 18.5 16 (9.8)
 ≥ 23.0 56 (34.4)
Blood type
 A/B/O/AB 79 (48.5)/27 (16.6)/36 (22.1)/21 (12.8)
Familial history (including second degree)
 Gastric cancer 19 (11.7)
 Others 22 (8.4)
 None 118 (72.4)
 unknown 4 (7.5)
Location
 Antrum 39 (23.9)
 Body 108 (66.3)
 Upper body & Cardia 7 (4.3)
 Diffuse 1 (0.6)
 Not assessed 8 (4.9)
*Early gastric cancer 77 (47.2)
**Advanced gastric cancer 86 (52.8)
Initial tumor stage (AJCC 7th edition)
 I 80 (49.1)
 II 26 (16)
 III 24 (14.7)
 IV 33 (20.2)
***CEA level assessed = 133 patients
 ≤ 3 ng/mL 121 (91)
 > 3 ng/mL 12 (9) median 4.935 (range 3.62-477.5)
H.pylori assessed = 57 patients
 positive 37 (65)
 negative 20 (35)
  1. * Early gastric cancer: cancer confined to mucosa or submucosa, irrespective of lymph nodes
  2. ** Advanced gastric cancer: cancer invading muscularis propria, irrespective of lymph nodes
  3. *** CEA: Carcinoembryonic antigen