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Table 1 General characteristics of study participants: The Korean Cancer Prevention Study-II and the KCPS-II sub-cohort

From: A colorectal cancer prediction model using traditional and genetic risk scores in Koreans

   KCPS-II cohort (Whole participants) KCPS-II sub-cohort (Case-cohort design)
   CRC No CRC P CRC No CRC P
N   258 145,584   173 1,514  
Age, year   50.7 ± 10.5 41.1 ± 10.3 <0.001 49.7 ± 10.9 40.1 ± 9.4 <0.001
Sex, % of female   24.1 37.9 <0.001 25.0 37.6 0.001
Body mass index, kg/m2   24.3 ± 2.7 23.6 ± 3.2 <0.001 24.3 ± 2.7 23.5 ± 3.2 0.001
Fasting blood glucose, mg/dL   99.0 ± 25.3 91.0 ± 19.0 <0.001 98.2 ± 27.8 90.1 ± 17.9 <0.001
Total cholesterol, mg/dL   197.7 ± 37.1 189.0 ± 33.8 0.002 195.6 ± 36.9 189.3 ± 41.8 0.037
Systolic blood pressure, mmHg   123.4 ± 16.3 117.9 ± 14.4 <0.001 121.8 ± 14.7 117.6 ± 14.3 0.037
Smoking status, % Ex 31.0 17.7 <0.001 29.6 15.8 <0.001
Current 29.9 29.2   30.7 30.2  
Alcohol drinking (yes), %   73.6 74.0 0.881 74.4 76.7 0.496
Exercise (yes), %   63.2 59.6 0.228 62.5 61.8 0.850
Family history of CRC (yes), %   5.0 2.3 0.005 5.1 2.0 0.011
  1. Values are mean ± standard deviation (SD) for continuous data.
  2. Body mass index (BMI) = weight in kilograms divided by height in meters squared.
  3. CRC: Colorectal cancer, KCPS-II: The Korean Cancer Prevention Study-II.