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Table 1 Patient-, procedure-, and endoscopist-level characteristics

From: The analysis of multilevel factors affecting adenoma detection rates for colonoscopies: a large-scale retrospective study

Variables

Total colonoscopy (n = 10,788) (%)

Adenoma (n = 2180) (%)

No adenoma (n = 8608) (%)

p value*

Sex

   

< 0.001

 Female

5280 (48.9)

821 (15.5)

4459 (84.5)

 

 Male

5508 (51.1)

1359 (24.7)

4149 (75.3)

 

Age, years

   

< 0.001

 < 40

1927 (17.9)

101 (5.2)

1826 (94.8)

 

 40–49

2236 (20.7)

311 (13.9)

1925 (86.1)

 

 50–59

3100 (28.7)

702 (22.6)

2398 (77.4)

 

 60–69

2435 (22.6)

715 (29.4)

1720 (70.6)

 

 > 70

1090 (10.1)

351 (32.2)

739 (67.8)

 

Mean (± SD)

52.62 ± 13.7

58.73 ± 10.91

51.08 ± 13.90

< 0.001

Sedation

   

< 0.001

 No

3207 (29.7)

506 (15.8)

2701 (84.2)

 

 Yes

7581 (70.3)

1674 (22.1)

5907 (77.9)

 

Colonoscopy method

   

< 0.001

 Single-examiner

7115 (66.0)

1549 (21.8)

5566 (78.2)

 

 Dual-examiner

3673 (34.0)

631 (17.2)

3042 (82.8)

 

Endoscopist’s experience

   

< 0.001

 Junior

7839 (72.7)

1366 (17.4)

6473 (82.6)

 

 Senior

2949 (27.3)

814 (27.6)

2135 (72.4)

 

Endoscopist’s sex

   

0.001

 Female

3651 (33.8)

672 (18.4)

2979 (81.6)

 

 Male

7137 (66.2)

1508 (21.1)

5629 (78.9)

 
  1. *p value: Student’s t-test for continuous variables and χ2 test for categorical data