Table 3.
Selected Characteristics of Control Subjects (Means or Proportions) by Quintile of Serum CRP Concentration in ATBC and PLCO*
| ATBC | PLCO | |||||
|---|---|---|---|---|---|---|
| Characteristics | Q1 | Q3 | Q5 | Q1 | Q3 | Q5 |
| C-reactive protein, ng/ml | 1.1 | 5.5 | 38.3 | 0.9 | 4.9 | 28.3 |
| Age, years | 58.7 | 58.1 | 58.6 | 64.7 | 65.8 | 64.9 |
| Smoking history | ||||||
| Total cigarettes per day | 18.3 | 20.8 | 21.3 | 7.6 | 11.5 | 14.3 |
| Years smoked, years | 35.9 | 37.6 | 38.3 | 12.0 | 15.6 | 21.1 |
| Smoking status (%) | ||||||
| Never | - | - | - | 55.7 | 49.3 | 40.8 |
| Former quit ≥15 years | - | - | - | 30.4 | 22.7 | 29.6 |
| Former quit <15 years | - | - | - | 11.4 | 20.0 | 16.9 |
| Current | 100 | 100 | 100 | 2.5 | 8.0 | 12.7 |
| Height (cm) | 172.0 | 173.4 | 172.3 | 173.1 | 172.8 | 170.5 |
| BMI (kg/m2) | 24.9 | 27.0 | 27.1 | 25.0 | 27.2 | 29.3 |
| BMI - WHO cut points (%) | ||||||
| <25.0 (normal weight) | 53.5 | 27.9 | 32.7 | 51.9 | 30.7 | 22.5 |
| ≥25.0 and <30 (overweight) | 39.6 | 51.2 | 47.8 | 44.3 | 53.3 | 36.6 |
| ≥30 (obese) | 6.9 | 20.9 | 19.5 | 3.8 | 16.0 | 40.9 |
| Medical history (%) | ||||||
| Diabetes mellitus | 5.0 | 6.0 | 6.2 | 3.9 | 13.5 | 18.6 |
| Dietary intake per day† | ||||||
| Red meat (g) | 25.6 | 22.8 | 26.1 | 67.5 | 78.8 | 81.6 |
| Alcohol (g) | 18.2 | 19.0 | 21.7 | 12.0 | 15.8 | 15.1 |
| Energy (kcal) | 2,781 | 2,696 | 2,893 | 2,000 | 2,139 | 2,117 |
| Total fat (g) | 100.5 | 100.6 | 106.3 | 63.8 | 69.8 | 70.5 |
| Saturated fat (g) | 48.6 | 51.9 | 54 | 21.1 | 23.3 | 24.4 |
| Carbohydrate (g) | 313.6 | 300.3 | 296.8 | 271.4 | 280.2 | 273.1 |
| Protein (g) | 104.1 | 103.0 | 102.9 | 77.0 | 82.7 | 83.4 |
| Vigorous physical activity, hours per week (%) | ||||||
| None or <1 h | - | - | - | 21.1 | 28.8 | 41.8 |
| 1–3 h | - | - | - | 36.6 | 30.1 | 26.9 |
| >4 h | - | - | - | 42.3 | 41.1 | 31.3 |
| Physical activity (%) | ||||||
| Occupational | ||||||
| Sedentary | 12.9 | 15.8 | 7.1 | - | - | - |
| Moderate | 26.7 | 26.2 | 29.2 | - | - | - |
| Heavy | 8.9 | 7.1 | 6.2 | - | - | - |
| Non-working | 51.5 | 50.8 | 57.5 | - | - | - |
| Leisure | ||||||
| Sedentary | 35.6 | 45.4 | 59.3 | - | - | - |
| Light, moderate | 54.5 | 48.6 | 36.3 | - | - | - |
| Exercise to keep fit | 9.9 | 6.0 | 4.4 | - | - | - |
*
Blank cells due to lack of available data
†
All dietary variables energy-adjusted except alcohol based on controls with complete dietary data