Prostate cancer risk by longitudinal salted or smoked fish consumption.

1Adjustment made for birth year, age at study entry in midlife, education, family history of prostate disease, going to a physician regularly, height in midlife, BMI in midlife, type 2 diabetes in midlife, rye bread-, fish-, fish liver oil-, meat-, and milk intake in adolescence.
2Three times a month or less.
3Once a week or more.