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Table 1 Demographic data of cholangiocarcinoma patients and non-cholangiocarcinoma population

From: Ultrasound screening for cholangiocarcinoma could detect premalignant lesions and early-stage diseases with survival benefits: a population-based prospective study of 4,225 subjects in an endemic area

Demographic data Total Cholangiocarcinoma patients (n = 32) Non- cholangiocarcinoma population (n = 4,193) P value
Gender 4,225 32 4,193 0.334a
 Male 1,919 18 1,901  
(45.4) (56.3) (45.3)
 Female 2,306 14 2,292  
(54.6) (43.7) (54.7)
Age (year) 45.71 51.91 45.68 <0.001c
History of smoking 4,217 27 4,190 0.092a
 Never 2,756 14 2,742  
(65.4) (51.9) (65.4)
 Ex-smoker 718 9 709  
(17.0) (33.3) (16.9)
 Active smoker 743 4 739  
(17.6) (14.8) (17.7)
Alcoholic consumption 4,217 27 4,190 <0.001b
 Never 1,315 9 1,306  
(31.2) (33.4) (31.2)
 Ex-consumption 492 10 482  
(11.7) (37.0) (11.5)
 Light consumption (< once a month) 1,360 4 1,356  
(32.2) (14.8) (32.3)
Moderate to heavy consumption 1,050 4 1,046  
(24.9) (14.8) (25.0)
Any liver cancers or cholangiocarcinoma in first-degree relatives 4,202 27 4,175 0.037a
 Yes 722 9 713  
(17.2) (33.3) (17.1)
 No 3,480 18 3,462  
(82.8) (66.7) (82.9)
Diagnosis of liver fluke 4,153 27 4,126 0.366a
 Ever 753 7 746  
(18.1) (25.9) (18.1)
 Never 3,293 19 3,274  
(79.3) (70.4) (79.3)
 Unknown 107 1 106  
(2.6) (3.7) (2.6)
  1. a Fisher’s exact test
  2. b Pearson’s χ 2 test
  3. c Mann–Whitney U test