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Table 1 Characteristics of study population by gastric cancer screening attendance within 2 years (n = 10,658)

From: Determinants of gastric cancer screening attendance in Korea: a multi-level analysis

   No Yes  
   (n = 5974) (n = 4684)  
   N (%) N (%) p-value*
Age (years) 40-49 1854 (31.0) 1391 (29.7) <0.01
  50-59 1344 (22.5) 1369 (29.2)  
  60-69 1291 (21.6) 1226 (26.2)  
  ≥70 1485 (24.9) 698 (14.9)  
Sex Male 2530 (42.4) 2026 (43.3) 0.35
  Female 3444 (57.7) 2658 (56.8)  
Household income Quartile 1 1852 (31.0) 1086 (23.2) <0.01
  Quartile 2 1550 (26.0) 1134 (24.2)  
  Quartile 3 1365 (22.9) 1112 (23.7)  
  Quartile 4 1207 (20.1) 1352 (28.9)  
Educational attainment Elementary school or uneducated 2716 (45.5) 1822 (38.9) <0.01
  Middle school 878 (14.7) 763 (16.3)  
  High school 1577 (26.4) 1233 (26.3)  
  University or higher 803 (13.4) 866 (18.5)  
Marital status Without spouse 1408 (23.6) 703 (15.1) <0.01
  With spouse 4551 (76.4) 3966 (84.9)  
Economic activity No 2607 (43.9) 1847 (39.6) <0.01
  Yes 3337 (56.1) 2823 (60.5)  
NHI vs Medicaid NHI 5574 (94.2) 4474 (95.9) <0.01
  Medicaid 341 (5.8) 190 (4.1)  
Private health insurance No 2699 (46.0) 1563 (33.9) <0.01
  Yes 3172 (54.0) 3052 (66.1)  
Self-reported health status Healthy 2268 (38.0) 1764 (37.7) 0.69
  Middle 1927 (32.3) 1548 (33.0)  
  unhealthy 1777 (29.7) 1372 (29.3)  
Limitation of activity Limited 1543 (55.5) 1130 (44.5) 0.04
  Unlimited 4429 (57.7) 3554 (42.3)  
Smoking     <0.01
  Never 3427 (57.5) 2829 (60.5)  
  Ex-smoker 1216 (20.4) 1069 (22.9)  
  current smoker 1317 (22.1) 775 (16.6)  
Problem drinking (AUDIT) score 0 ~ 11 4922 (83.0) 3862 (83.0) 0.93
  ≥12 1005 (17.0) 792 (17.0)  
Depression No 5105 (85.4) 3987 (85.1) 0.63
  Yes 869 (14.6) 697 (14.9)  
Gastric or duodenal ulcer history No 5576 (93.3) 4264 (91.0) <0.01
  Yes 398 (6.7) 420 (9.0)  
  1. *p-value by chi-square test.