Table 2.
Selected characteristics of controls according to C-reactive protein level.
| Quartile of C-reactive protein (mg/L) | P trend | ||||
|---|---|---|---|---|---|
| Lowest | Second | Third | Highest | ||
| Men, n (%) | 87 (20.5) | 108 (25.4) | 118 (27.8) | 112 (26.4) | |
| Women, n (%) | 77 (33.2) | 50 (21.5) | 51 (22.0) | 54 (23.3) | |
| Continuous variables | |||||
| Age (years), median (IQR) | 58 (54.5–62.5) | 60 (56.0–65.0) | 60 (56.0–64.0) | 61 (56.0–64.0) | 0.081 |
| BMI (kg/m2), median (IQR) | 21.6 (20.1–23.4) | 22.9 (20.9–24.2) | 23.3 (21.3–25.0) | 23.9 (22.2–25.9) | <0.0001 |
| Physical activity (METs-hour/day), median (IQR) | 35.5 (31.5–39.7) | 34.3 (31.4–38.8) | 33.9 (30.8–38.1) | 34.1 (31.9–38.3) | 0.40 |
| Total energy (kcal/day), median (IQR) | 1870 (1664–2240) | 1834 (1553–2269) | 1883 (1522–2236) | 1853 (1482–2227) | 0.60 |
| Total fiber (g/day)b, median (IQR) | 13.3 (10.4–17.0) | 12.7 (10.0–16.5) | 12.9 (9.6–17.0) | 12.8 (10.0–16.4) | 0.80 |
| Total meat (g/day)b, median (IQR) | 44.1 (29.0–69.6) | 43.2 (28.6–67.0) | 41.6 (25.0–61.2) | 46.0 (28.2–71.7) | 0.47 |
| CRP (mg/L), median (IQR) | 0.1 (0.08–0.1) | 0.3 (0.2–0.3) | 0.5 (0.4–0.6) | 1.2 (0.9–1.8) | <0.0001 |
| Categorical variables | |||||
| Smoking, n (%) | 0.24 | ||||
| Current smoker | 13 (7.9) | 17 (10.8) | 16 (9.5) | 23 (13.9) | |
| Past smoker | 52 (31.7) | 59 (37.3) | 69 (40.8) | 64 (38.6) | |
| Never smoker | 99 (60.4) | 82 (51.9) | 84 (49.7) | 79 (47.6) | |
| Drinking, n (%) | 0.89 | ||||
| Current drinker | 118 (72.0) | 114 (72.2) | 117 (69.2) | 118 (71.1) | |
| Past drinker | 4 (2.4) | 8 (5.1) | 6 (3.6) | 6 (3.6) | |
| Never drinker | 42 (25.6) | 36 (22.8) | 46 (27.2) | 42 (25.3) | |
| Family CRC history, n (%) | 20 (12.2) | 21 (13.3) | 21 (12.4) | 17 (10.2) | 0.86 |
| Diabetes Mellitus, n (%) | 11 (6.7) | 9 (5.7) | 8 (4.7) | 12 (7.2) | 0.78 |
an, number of subjects; BMI, body mass index; METs, metabolic equivalents; CRC, colorectal cancer; SD, standard deviation; IQR, inter-quartile range.
bEnergy-adjusted.