Table 1 The baseline features of the study population
From: Dietary and lifestyle indices for hyperinsulinemia and colorectal cancer risk: a case-control study
Variables | Cases (n = 71) | Controls (n = 142) | P-value |
|---|---|---|---|
Age (year) | 58.2 ± 10.4 | 57.7 ± 10.4 | 0.746 |
Physical activity (MET-h/day) | 36.8 ± 3.6 | 36.7 ± 4.8 | 0.932 |
Income (dollar) | 393.0 (253.0) | 402.0 (302.0) | 0.206 |
BMI (kg/m2) | 27.6 ± 4.2 | 26.6 ± 4.2 | 0.362 |
Gender | Â | Â | 0.558 |
 Male | 35 (49.3) | 70 (49.3) |  |
 Female | 36 (50.7) | 72 (50.7) |  |
Education | Â | Â | 0.147 |
 No formal education | 28 (39.3) | 36 (25.4) |  |
 Elementary | 22 (31.0) | 45 (31.6) |  |
 Junior/Senior high school | 7 (9.9) | 19 (13.4) |  |
 Diploma/College/University | 14 (19.7) | 42 (29.6) |  |
Smoking | Â | Â | 0.164 |
 Never | 57 (80.2) | 101 (70.1) |  |
 Former | 8 (11.3) | 15 (10.6) |  |
 Current | 6 (8.5) | 26 (18.3) |  |
Family history of CRC in the first degree | Â | Â | 0.017 |
 Yes | 7 (9.9) | 3 (2.1) |  |
 No | 64 (90.1) | 139 (97.9) |  |
Family history of CRC in the second degree | Â | Â | 0.006 |
 Yes | 6 (8.5) | 1 (0.7) |  |
 No | 65 (91.5) | 141 (99.3) |  |
Ibuprofen | Â | Â | 0.059 |
 Yes | 5 (7.0) | 22 (15.5) |  |
 No | 66 (93.0) | 120 (84.5) |  |
Aspirin | Â | Â | 0.016 |
 Yes  No | 1 (1.4) 70 (98.6) | 14 (9.9) 128 (90.1) |  |