Table 1 Patient baseline characteristics and detection rate by age and gender

Age (y)

62.26 ± 14.14

60.74 ± 13.86

Gender (M/F)

418/620

498/784

 Uncinate

12.0%(125/1038)

10.6%(136/1282)

 Head

20.2%(210/1038)

22.8%(292/1282)

 Neck

13.3%(138/1038)

13.6%(175/1282)

 Body

32.1%(333/1038)

31.9%(409/1282)

 Tail

22.4%(232/1038)

21.1%(270/1282)

 Male

1.54% (418/27143)

2.63%(498/18954)

 Female

2.30% (620/27067)

4.10%(784/19145)

  ≤ 29

0.40%(24/6000)

0.58%(36/6196)

 30–39

0.83%(47/5657)

1.56%(65/4176)

 40–49

1.40%(106/7570)

2.83%(139/4917)

 50–59

1.80%(225/12500)

3.50%(292/8349)

 60–69

2.21%(314/14236)

4.49%(422/9391)

 70–79

3.46%(208/6007)

6.06%(232/3827)

  ≥ 80

5.09%(114/2240)

7.72%(96/1243)