TABLE 3.
Age-adjusted and multivariate-adjusted HRs of the association between vegetarian dietary patterns and prostate cancer incidence
| Variable | Vegan | Lacto-vegetarian | Pesco-vegetarian | Semi-vegetarian | Nonvegetarian |
| Overall prostate cancer | |||||
| Events, n | 59 | 333 | 121 | 63 | 503 |
| Person-years | 15,794.80 | 58,676.30 | 17,629.70 | 9691.50 | 92,569.30 |
| IR1 ×100,000 | 373.54 | 567.52 | 686.34 | 650.05 | 543.38 |
| HR2 (95% CI) | 0.64 (0.48, 0.83) | 0.94 (0.81, 1.08) | 1.12 (0.92, 1.37) | 1.11 (0.85, 1.46) | 1.00 |
| HR3 (95% CI) | 0.65 (0.49, 0.85) | 0.96 (0.83, 1.10) | 1.06 (0.87, 1.30) | 1.18 (0.91, 1.53) | 1.00 |
| HR4 (95% CI) | 0.66 (0.50, 0.87) | 0.96 (0.83, 1.12) | 1.07 (0.88, 1.31) | 1.18 (0.91, 1.54) | 1.00 |
| Advanced prostate cancer | |||||
| Events, n | 15 | 70 | 28 | 13 | 111 |
| Person-years | 15,657.10 | 57,825.00 | 17,545.70 | 9441.00 | 90,603.80 |
| IR ×100,000 | 95.80 | 121.05 | 159.58 | 137.70 | 122.51 |
| HR2 (95% CI) | 0.70 (0.41, 1.20) | 0.84 (0.62, 1.13) | 1.09 (0.72, 1.66) | 1.00 (0.56, 1.78) | 1.00 |
| HR3 (95% CI) | 0.70 (0.41, 1.21) | 0.86 (0.63, 1.17) | 1.05 (0.69, 1.59) | 1.07 (0.60, 1.90) | 1.00 |
| HR4 (95% CI) | 0.78 (0.45, 1.35) | 0.91 (0.66, 1.24) | 1.10 (0.72, 1.68) | 1.09 (0.61, 1.95) | 1.00 |
1
IR, incidence rate.
2
Age-adjusted model.
3
Multivariate model 1: includes race, family history of prostate cancer, education, screening for prostate cancer, and kcal.
4
Multivariate model 2: includes model 1 plus BMI.