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Table 1 Participant characteristics by polyp status, Kaiser Permanente Washington, Seattle, Washington, 1998-2007

From: Telomere length differences between colorectal polyp subtypes: a colonoscopy-based case-control study

Patient characteristics

 

Controls

Adenomas

Serrated polyps

Both Adenomas + Serrated polyps

  

(n = 49)

(n = 80)

(n = 33)

(n = 28)

Age in years; Mean (SD)

 

59.7 (10.8)

62.3 (10.4)

61.7 (9.2)

62.3 (10.9)

Gender; n(%)

Male

25 (51)

44 (55)

13 (39.4)

13 (46.4)

 

Female

24 (49)

36 (45)

20 (60.6)

15 (53.6)

White race; n(%)

 

44 (89.8)

72 (90)

29 (87.8)

25 (89.3)

Smoking; n(%)

Never

20 (40.8)

27 (33.8)

9 (27.3)

9 (32.1)

 

Former

22 (44.9)

50 (62.5)

20 (60.6)

14 (50)

 

Current

7 (14.3)

3 (3.8)

4 (12.1)

5 (17.9)

Alcohol use; n(%)

 

31 (63.3)

44 (55)

22 (66.7)

18 (64.3)

BMI; n(%)

< 25

17 (34.7)

25 (31.3)

10 (30.3)

8 (28.6)

 

25–29.99

19 (38.8)

37 (46.3)

10 (30.3)

9 (32.1)

 

30+

13 (26.5)

17 (21.4)

13 (39.4)

11 (39.3)

Education; n(%)

<High school

8 (16.3)

11 (13.8)

4 (12.1)

3 (10.7)

 

Some college

11 (22.5)

21 (26.3)

9 (27.3)

12 (42.9)

 

College +

30 (61.2)

48 (60)

20 (60.6)

13 (46.4)

Anti-inflammatory drug use; n(%)

 

26 (53.1)

41 (51.3)

17 (51.5)

10 (35.7)

Physical activity ≥60 MET h/wk.; n(%)

 

41 (83.7)

62 (77.5)

26 (78.8)

23 (82.1)

Relative Telomere length; Median (IQR)

 

0.60 (0.56–0.72)

0.60 (0.50–0.71)

0.57 (0.45–0.67)

0.59 (0.51–0.67)

Short telomeres; n(%)

T/S < 0.58 or shortest tertilea

17 (34.7)

36 (45.6)

19 (57.8)

14 (50)

  1. BMI Body Mass Index, MET Metabolic Equivalent of Task
  2. aTelomere tertiles were based on the telomere length distribution among controls only