Relative risk (95% CI) of postmenopausal breast cancer according to quintiles of energy-adjusted folate
Relative risk (95% CI) of postmenopausal breast cancer according to quintiles of energy-adjusted folate
Folate | Quintiles of intake
| |||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | p for trend | |
Cases | 395 | 355 | 366 | 347 | 349 | |
Person-years | 77,779 | 80,108 | 82,379 | 83,957 | 86,091 | |
Median intake (μg/day)a | 296 | 350 | 392 | 440 | 522 | |
Age-adjusted | 1.00 | 0.86(0.75–1.00) | 0.86 (0.75–0.99) | 0.80 (0.69–0.92) | 0.78 (0.67–0.90) | 0.0006 |
Multivariable-adjustedb | 1.00 | 0.85 (0.73–0.98) | 0.85 (0.73–0.98) | 0.79 (0.68–0.91) | 0.78 (0.67–0.90) | 0.001 |