Table 3.
Selected baseline characteristics of participants at enrolment in NCRCC study
| Selected characteristics | CRCSC | CRCPC |
| N=19 377 (%) | N=2122* (%) | |
| Income (Yuan per year） | ||
| Less than 32 000 | 60.8 | 38.8 |
| 32 000~50 000 | 26.4 | 33.7 |
| More than 50 000 | 12.7 | 27.5 |
| WHR (mean±SD) | 0.91±0.05 | 0.92±0.06 |
| Waist circumference (cm) | 85.1±8.1 | 81.0±8.8 |
| Tobacco | ||
| Ever smoked | 3.6 | 16.6 |
| Currently smoking | 28.2 | 24.1 |
| 1–14 cigarettes per day | 27.5 | 35.3 |
| 15–20 cigarettes per day | 57.8 | 55.6 |
| >20 cigarettes per day | 14.7 | 9.0 |
| Pack-years of smoking (mean±SD) | 34.2±18.1 | 31.1±19.2 |
| Alcohol | ||
| Ever drank | 1.5 | 10.8 |
| Currently drinking | 20.4 | 23.8 |
| Low risk drinking† | 30.3 | 44.9 |
| Medium risk drinking‡ | 28.1 | 21.1 |
| High risk drinking§ | 27.7 | 15.0 |
| Very high risk drinking¶ | 14.0 | 19.0 |
| Green tea | ||
| Former drinking | 0.2 | 0.5 |
| Currently drinking | 33.6 | 26.6 |
| Red meat intake (≥4 times per week) | 51.9 | 39.2 |
| Vegetable intake (≥6 times per week) | 94.5 | 19.5 |
| Fruit intake (≥4 times per week) | 25.0 | 28.0 |
| Regular exercise | 13.4 | 34.1 |
| Sleep time (hour, mean±SD) | 8.4±1.2 | 8.7±1.0 |
| Aspirin use | 4.9 | 4.5 |
| Statin use | – | 4.7 |
| Metformin use | – | 4.1 |
| Hypertension | 34.8 | 35.8 |
| Diabetes | 7.6 | 12.1 |
| Vascular disease | 5.8 | 7.4 |
*2122 participants who received an electronic version questionnaire.
†40 g of alcohol consumption per day or less for men and 20 g for women.
‡41–60 g of alcohol consumption per day for men and 21–40 g for women.
§61–100 g of alcohol consumption per day for men and 41–60 g for women.
¶More than 100 g of alcohol consumption per day for men and 60 g for women.
CRCPC, Colorectal Cancer Patients Cohort; CRCSC, Colorectal Cancer Screening Cohort; NCRCC, National Colorectal Cancer Cohort; WHR, waist-to-hip ratio.;