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Table 1 Characteristics of patients, and polyp findings in each age group

From: Findings in young adults at colonoscopy from a hospital service database audit

  

All

%

Age <50

%

Age ≥50

%

P-value <50 vs ≥50

Totals

 

n = 2064

 

n = 485

 

n = 1579

  

Mean age

 

59.7

 

39.2

 

66.0

  

Median age

 

60

 

42

 

65

  

Age range

 

18–96

 

18–49

 

50–96

  

Sex

Males

984

47.6

220

45.4

764

48.4

0.13

Females

1080

52.4

265

54.6

815

51.6

 

Indications

        
 

IBD

90

4.4

49

10.1

41

2.6

<0.001

 

Overt bleeding

348

16.8

108

22.2

240

15.2

<0.001

 

Occult bleeding

350

16.9

29

5.9

321

20.3

<0.001

 

Pain

227

11

77

15.9

150

9.5

<0.001

 

Bowel habit

194

9.4

74

15.3

120

7.6

<0.001

 

FH CRC

117

5.7

42

8.7

75

4.8

0.001

 

PH CRC

83

4

4

0.8

79

5

<0.001

 

PH polyps

303

14.9

34

7

274

17.4

<0.001

Findings

        
 

Any polyps

714

34.6

80

16.5

584

37

<0.001

 

Serrated polyps

205

9.9

41

8.5

164

10.4

0.21

 

Conventional adenomas

523

25.3

46

9.5

477

30.2

<0.001

 

Multiple polyps

406

19.7

35

7.2

371

23.5

<0.001

 

CPL

225

10.9

21

4.3

204

12.9

<0.001

Polyp sub-types

        
 

SSA/P

65

3.1

11

2.3

54

3.4

0.20

 

TSA

1

0.01

0

0

1

0.06

 
 

TVA

95

4.6

8

1.6

87

5.5

<0.001

 

ATA

76

3.7

3

0.6

73

4.6

<0.001

 

VA

2

0.01

0

0

2

0.13

 

Cancers

 

CRC

55

2.7

5

1

50

3.2

0.01

 

Distal CRC Site

28

49.1

4

80

24

48.1

0.35

  1. IBD Inflammatory bowel disease (Crohns disease, ulcerative colitis, NOS), FH CRC Family history of CRC, PH CRC Personal history of CRC, PH Polyps Personal history of polyps, CPL known CRC precursor lesions, SSA/P Sessile serrated adenoma/polyps, TVA Tubulovillous adenoma, ATA Advanced tubular adenoma (≥10 mm, and/or high-grade dysplasia), TSA Traditional serrated adenoma, VA Villous adenoma
  2. Significant p-values are shown in italics