Skip to main content

Table 1 Characteristics of study population among colorectal adenoma events and non-events

From: Meat-derived carcinogens, genetic susceptibility and colorectal adenoma risk

Covariate

Categories

N Non-event (%)a, Mean ± SD

N Event (%)a, Mean ± SD

p b

Sex

Female

151 (69.9)

47 (37.3)

<0.01

Male

65 (30.1)

79 (62.7)

Age

39–50

42 (19.4)

19 (15.1)

0.56

50–60

124 (57.4)

74 (58.7)

60+

50 (23.2)

33 (26.2)

Smoking status

Never

130 (60.2)

53 (42.1)

<0.01

Past

65 (30.1)

50 (39.7)

Current

21 (9.7)

23 (18.2)

Family history of CRC

Yes

142 (65.7)

72 (57.1)

0.11

No

74 (34.3)

54 (42.9)

Physical activity (MET min/week)

≤1,865

54 (25.0)

35 (28.2)

0.30

1,866–3,913

54 (25.0)

35 (28.2)

3,914–6,363

54 (25.0)

20 (16.2)

≥6,364

54 (25.0)

34 (26.4)

Alcohol intake (g/day)

Abstainers

37 (17.1)

17 (13.5)

0.38

Low

118 (54.6)

65 (51.6)

Moderate

61 (28.3)

44 (34.9)

Dietary energy intake (kcal/day)

≤1,017.0

54 (25.0)

38 (30.2)

0.62

1,017.0–1,388.5

54 (25.0)

33 (26.2)

1,388.5–1,781.6

54 (25.0)

30 (23.8)

≥1,781.6

54 (25.0)

25 (19.8)

Fruit and vegetable intake (servings per day)

≤2.9

55 (25.5)

33 (26.2)

0.07

3.0–4.1

54 (25.0)

26 (20.6)

4.2–6.0

53 (24.5)

46 (36.5)

≥6.1

54 (25.0)

21 (16.7)

Serum albumin (g/L)

≤40.0

58 (27.2)

33 (26.8)

<0.01

40.1–42.0

63 (29.6)

18 (14.6)

42.1–44.0

52 (24.4)

35 (28.5)

≥44.1

40 (18.8)

37 (30.1)

Serum folate (nmol/L)

≤26.6

55 (25.8)

28 (22.8)

0.02

26.7–37.3

52 (24.4)

40 (32.5)

37.4–45.3

32 (15.0)

29 (23.6)

≥45.4

74 (34.7)

26 (21.1)

Body mass index (kg/m2)

27.9 ± 6.2

29.2 ± 5.9

0.07

Dietary fiber intake (g/day)

27.95 ± 16.10

24.4 ± 12.0

0.03

Serum triglycerides (mmol/L)

1.23 ± 0.71

1.47 ± 0.89

<0.01

  1. aPercentages are calculated based on the N of each covariate; missing information on physical activity (N = 2), serum albumin (N = 6), serum folate (N = 6), BMI (N = 3) and serum triglycerides (N = 6)
  2. b p value for differences in proportions calculated using chi-squared tests and differences in means were calculated using t tests