Table 1.
Study subject baseline characteristics.
| Normal (n = 21) |
Abnormal (n = 31) |
Overall (n = 52) |
Missing Data |
p-Value 1 | |
|---|---|---|---|---|---|
| Age, mean (SD) | 59.6 (5.8) | 61.8 (8.2) | 60.9 (7.4) | 0 | 0.26 |
| Sex, female, n (%) | 12 (57.1) | 18 (58.1) | 30 (57.7) | 0 | 1.00 |
| Ethnicity, n (%) | 0 | 0.63 | |||
| White | 14 (66.7) | 18 (58.1) | 32 (61.5) | ||
| Black | 7 (33.3) | 12 (38.7) | 19 (36.5) | ||
| Black Hispanic | 0 (0) | 1 (3.2) | 1 (1.9) | ||
| Smoking, n (%) | 1 | 0.38 | |||
| Nonsmoker | 11 (52.4) | 10 (33.3) | 21 (41.2) | ||
| Past smoker | 6 (28.6) | 13 (43.3) | 19 (37.3) | ||
| Current smoker | 4 (19.0) | 7 (23.3) | 11 (21.6) | ||
| Family history of CRC | 5 (26.3) | 6 (23.1) | 11 (24.4) | 0 | 1.00 |
| BMI (kg/m2), mean (SD) | 30.9 (6.5) | 32.3 (6.1) | 31.7 (6.2) | 2 | 0.44 |
| Comorbidities, n (%) | |||||
| Diabetes Mellitus | 5 (23.8) | 9 (30.0) | 14 (27.5) | 0 | 0.87 |
| Crohn’s disease | 0 (0) | 0 (0) | 0 (0) | 1 | 1.00 |
| Ulcerative colitis | 0 (0) | 1 (3.3) | 1 (2.0) | 0 | 1.00 |
| Hemorrhoids | 3 (14.3) | 11 (36.7) | 14 (27.5) | 0 | 0.15 |
| Anal tears | 1 (4.8) | 1 (3.3) | 2 (3.9) | 0 | 1.00 |
| Peptic ulcer | 1 (4.8) | 1 (2.0) | 0 | 0.41 | |
| Diverticulitis | 6 (28.6) | 7 (23.3) | 13 (25.5) | 0 | 0.92 |
| Gastroenteritis | 1 (4.8) | 1 (3.3) | 2 (3.9) | 0 | 1.00 |
| Irritable bowel syndrome | 4 (19.0) | 2 (6.7) | 6 (11.8) | 0 | 0.21 |
| Angiodysplasia | 21 (100.0) | 30 (100.0) | 51 (100.0) | 1 | 1.00 |
| Physical Activity (min/wk), mean (SD) | |||||
| Walking | 41.6 (71.6) | 41.9 (80.7) | 41.8 (76.5) | 0 | 0.91 |
| Lifting | 25.3 (45.5) | 6.9 (22.9) | 14.4 (34.7) | 0 | 0.04 |
| Light exercise | 98.1 (116.4) | 76.6 (102.4) | 85.3 (107.7) | 0 | 0.50 |
| Moderate exercise | 93.5 (100.1) | 92.5 (109.4) | 92.9 (104.8) | 0 | 0.97 |
| Vigorous exercise | 43.9 (76.7) | 39.6 (79.0) | 41.4 (77.4) | 0 | 0.24 |
| Dietary intake, mean (SD) | |||||
| Energy (kcal/day) | 1391.8 (938.9) | 1757.6 (920.1) | 1630.4 (933.0) | 6 | 0.16 |
| Total meat (oz/day) | 2.1 (2.0) | 3.3 (2.3) | 2.9 (2.3) | 6 | 0.05 |
| Red meat (oz/day) | 0.7 (0.8) | 1.2 (0.8) | 1.0 (0.8) | 6 | 0.03 |
| Processed meat (oz/day) | 0.6 (0.7) | 0.9 (0.9) | 0.8 (0.8) | 6 | 0.18 |
| Meat doneness (steak, burger) 2 | 2.4 (0.9) | 2.7 (0.7) | 2.6 (0.8) | 2 | 0.17 |
| Alcohol (g/day) | 17.9 (49.4) | 8.6 (26.0) | 11.9 (35.6) | 6 | 0.73 |
| Alcohol (standard drinks/wk) | 8.3 (18.6) | 10.9 (33.9) | 9.9 (28.4) | 3 | 0.87 |
| Total fat (g/day) | 52.2 (42.3) | 64.1 (33.1) | 60.0 (36.5) | 6 | 0.11 |
| Total fiber (g/day) | 13.5 (10.8) | 16.0 (9.7) | 15.1 (10.0) | 6 | 0.21 |
| Vitamin B2 (mg/day) | 1.6 (0.9) | 1.9 (1.1) | 1.8 (1.0) | 6 | 0.26 |
| Vitamin B6 (mg/day) | 1.3 (0.9) | 2.0 (1.3) | 1.7 (1.2) | 6 | 0.06 |
| Vitamin B9 (mcg/day) | 244.3 (174.0) | 324.6 (172.2) | 296.7 (175.2) | 6 | 0.11 |
| Vitamin B12 (mcg/day) | 2.9 (1.9) | 4.7 (3.5) | 4.1 (3.1) | 6 | 0.05 |
| Choline (mg/day) | 207.0 (130.6) | 297.5 (167.8) | 266.0 (160.4) | 6 | 0.06 |
| Betaine (mg/day) | 70.2 (56.8) | 111.8 (76.0) | 97.4 (72.1) | 6 | 0.04 |
Note: 1. Difference between subjects with normal and abnormal colonoscopy; 2. Meat doneness self-reported on a scale of 0–4.5 based on a set of images. CRC, colorectal cancer; BMI, body mass index.