Table 1 The characteristics of participants

Age, n (%)

0.29

0.22

 ≥ 55

23 (96%)

33 (77%)

44 (66%)

31 (74%)

41 (60%)

77 (92.8%)

57 (58.2%)

 40–55

1 (4%)

10 (23%)

23 (34%)

11 (26%)

27 (40%)

6 (7.2%)

41 (41.8%)

Sex, n (%)

0.002

1.00

 Female

6 (25%)

7 (16%)

31 (46%)

14 (33%)

23 (34%)

32 (38.6%)

52 (53.1%)

 Male

18 (75%)

36 (84%)

36 (54%)

28 (67%)

45 (66%)

51 (61.4%)

46 (46.9%)

Smoking history, n (%)

0.02

0.44

 Smokers

6 (25%)

12 (28%)

7 (10%)

9 (21%)

10 (15%)

24 (28.9%)

39 (39.8%)

 Non-smokers

18 (75%)

31 (72%)

60 (90%)

33 (79%)

58 (85%)

52 (62.7%)

59 (60.2%)

 Unknown

7 (8.4%)

Alcohol history, n (%)

1.00

0.10

 Drinkers

0

4 (9%)

7 (10%)

3 (7%)

13 (19%)

14 (16.9%)

48 (49.0%)

 Non-drinkers

24 (100%)

39 (91%)

60 (90%)

39 (93%)

55 (81%)

59 (71.1%)

50 (51.0%)

 Unknown

10 (12.0%)

Pathological type

 ESCC, n (%)

22 (92%)

39 (91%)

38 (90%)

72 (86.7%)

 EAC, n (%)

2 (8%)

4 (9%)

4 (10%)

8 (9.6%)

 Others, n (%)

3 (3.6%)

Stage, n (%)

 Stage 0

4 (17%)

3 (7%)

2 (5%)

10 (12.0%)

 Stage I

13 (54%)

9 (21%)

8 (19%)

14 (16.9%)

 Stage II

4 (17%)

11 (26%)

13 (31%)

27 (32.5%)

 Stage III

2 (8%)

12 (28%)

7 (17%)

14 (16.9%)

 Stage IV

1 (4%)

8 (19%)

6 (14%)

18 (21.7%)

 Unknown

Healthy control, n (%)

62 (93%)

63 (93%)

98 (100%)

Benign disease, n (%)

5 (7%)

5 (7%)