Table 2

Relative risk (RR) and 95% confidence interval (CI) of prostate cancer by intake of cruciferous vegetables in Health Professionals Follow-Up Study (1986–2000)

Cruciferous vegetables (1986 intake)P (trend)
≤1/wk1.1–2/wk2.1–3/wk3.1–5/wk>5/wk
Total prostate cancer
 Age <65 (n)163248183202166
  RRa1.01.030.970.830.810.02
  95% CI0.85–1.270.78–1.200.67–1.030.64–1.02
 Age ≥65 (n)333438321476439
  RRa1.00.970.910.980.980.72
  95% CI0.83–1.120.77–1.060.85–1.130.84–1.14
Organ-confined prostate cancer
 Age <65 (n)10516210512792
  RRa1.01.040.870.820.720.007
  95% CI0.81–1.330.66–1.150.63–1.070.54–0.97
 Age ≥65 (n)169252184255230
  RRa1.01.080.990.990.960.60
  95% CI0.89–1.320.80–1.230.81–1.210.78–1.19
Extraprostatic prostate cancer
 Age <65 (n)1834341927
  RRa1.01.221.360.620.900.25
  95% CI0.69–2.170.76–2.440.32–1.210.48–1.70
 Age ≥65 (n)5655517184
  RRa1.00.720.880.931.100.07
  95% CI0.49–1.060.59–1.300.64–1.330.77–1.59
  • a Multivariate model included same variables as in Table 1<$REFLINK> .