HRs and 95% CIs for incidence of colorectal cancer by baseline dietary pattern and weight category, NIH-AARP Diet and Health Study for Women, 1996–2006 (n=125 281)
| Normal weight | Overweight | Obese | ||||
| Dietary score | HR | 95% CI | HR | 95% CI | HR | 95% CI |
| Mediterranean Diet Quintiles | ||||||
| 1 | – | – | – | – | – | – |
| 2 | 0.95 | 0.76 to 1.20 | 1.09 | 0.86 to 1.38 | 1.35 | 1.04 to 1.74 |
| 3 | 0.88 | 0.69 to 1.12 | 1.00 | 0.78 to 1.30 | 0.86 | 0.64 to 1.16 |
| 4 | 0.90 | 0.68 to 1.18 | 0.81 | 0.59 to 1.11 | 0.89 | 0.63 to 1.25 |
| 5 | 1.02 | 0.75 to 1.37 | 0.99 | 0.68 to 1.41 | 0.95 | 0.63 to 1.43 |
| p for trend | 0.9384 | 0.4318 | 0.2633 | |||
| Healthy Eating Index Quintiles | ||||||
| 1 | – | – | – | – | – | – |
| 2 | 0.77 | 0.58 to 1.01 | 0.87 | 0.65 to 1.16 | 0.85 | 0.63 to 1.15 |
| 3 | 0.71 | 0.54 to 0.94 | 0.94 | 0.71 to 1.25 | 0.90 | 0.67 to 1.21 |
| 4 | 0.71 | 0.54 to 0.93 | 0.73 | 0.55 to 0.98 | 0.82 | 0.60 to 1.12 |
| 5 | 0.83 | 0.64 to 1.08 | 0.64 | 0.47 to 0.86 | 0.71 | 0.51 to 0.99 |
| p for trend | 0.1557 | 0.0018 | 0.0573 | |||
| DASH Quintiles | ||||||
| 1 | – | – | – | – | – | – |
| 2 | 0.86 | 0.68 to 1.09 | 0.86 | 0.67 to 1.10 | 1.00 | 0.77 to 1.30 |
| 3 | 0.70 | 0.53 to 0.93 | 0.92 | 0.70 to 1.20 | 0.78 | 0.57 to 1.06 |
| 4 | 0.86 | 0.66 to 1.13 | 0.74 | 0.54 to 1.00 | 0.72 | 0.51 to 1.00 |
| 5 | 0.73 | 0.56 to 0.95 | 0.83 | 0.62 to 1.11 | 0.73 | 0.52 to 1.02 |
| p for trend | 0.0389 | 0.1256 | 0.0128 | |||
Cox proportional hazard models adjusted for age, gender, race/ethnicity, education, smoking, physical activity and energy intake. Separate models were developed for each dietary pattern and weight category. Dietary adherence categories are based on lowest and highest tertiles. Weight categories were based on BMI (normal: 18.5–<25 kg/m2; overweight: 25–<30 kg/m2; obese: ≥30 kg/m2).
BMI, body mass index.