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Table 1 Descriptive characteristics of adenoma cases and adenoma-free controls

From: Elevated C-peptide and insulin predict increased risk of colorectal adenomas in normal mucosa

Variable

Cases (N = 190)

Controls (N = 488)

p-value

Mean Age in Years (SE)

56.8 (0.7)

55.7 (0.5)

0.19

White (%)

156 (82)

383 (78)

0.34

Male (%)

112 (59)

188 (39)

0.0001

Mean Body Mass Index (SE)

28.3 (0.4)

27.1 (0.3)

0.02

Family History of CRC (%)

28 (17)

60 (14)

0.37

Mean Dietary Fat (g/day) (SE)

70.8 (2.7)

68.6 (1.5)

0.47

Mean Alcohol1 (SE)

12.6 (1.7)

8.2 (0.7)

0.02

Mean Waist/hip Ratio (SE)

0.930 (0.008)

0.886 (0.007)

0.0001

Smokers (%)

29 (17)

49 (11)

0.06

Mean Monthly NSAID Use in Past 5 Years (SE)

12.9 (2.0)

12.7 (1.4)

0.94

Mean Total Daily Calcium (mg) (SE)

744 (28)

785 (18)

0.23

Mean Red Meat (svgs/day) (SE)

1.73 (0.11)

1.47 (0.06)

0.03

Apoptosis (Morphology)2

3.33 (0.10)

3.76 (0.06)

0.0003

C-peptide (mean, se)

1.86 (0.10)

1.61 (0.08)

0.05

IGFBP-1 (mean, se)

21.3 (1.60)

24.1 (1.02)

0.13

Insulin (mean, se)

10.5 (0.8)

8.1 (0.5)

0.008

Number of Adenomas (mean, se)

1.58 (0.08)

-

-

Adenoma size (mean, se)3

6.21 (0.45)

-

 
  1. 1 Daily grams from alcohol.
  2. 2Apoptosis – mean apoptotic cells per crypt.
  3. 3 Mean size of the largest adenoma.