Table 3.

ORs of prostate cancer according to quintile of serum carotenoids

Quintile
Ptrend
1*2345
Lycopene
    Quintile median (μg/dL)30.546.862.278.5108.4
    No. of cases/controls136/168130/169121/168154/169151/168
    OR (95% CI)1.001.00 (0.72-1.40)0.93 (0.66-1.31)1.16 (0.84-1.61)1.14 (0.82-1.58)0.28
α-Carotene
    Quintile median (μg/dL)2.64.76.910.316.6
    No. of cases/controls136/168115/168145/169136/168160/168
    OR (95% CI)1.000.89 (0.63-1.25)1.06 (0.76-1.48)1.04 (0.74-1.46)1.18 (0.85-1.64)0.17
β-Carotene
    Quintile median (μg/dL)6.110.315.222.038.7
    No. of cases/controls117/168122/169156/168136/169160/168
    OR (95% CI)1.001.03 (0.73-1.45)1.36 (0.97-1.90)1.14 (0.81-1.61)1.30 (0.93-1.82)0.16
β-Cryptoxanthin
    Quintile median (μg/dL)2.95.06.89.516.8
    No. of cases/controls139/168139/169123/168132/169158/168
    OR (95% CI)1.000.98 (0.71-1.36)0.87 (0.62-1.22)0.89 (0.64-1.25)1.09 (0.78-1.52)0.50
Lutein
    Quintile median (μg/dL)9.313.317.222.431.5
    No. of cases/controls151/168116/169149/168127/169148/168
    OR (95% CI)1.000.76 (0.54-1.06)0.93 (0.67-1.28)0.78 (0.56-1.09)0.92 (0.66-1.27)0.85
Zeaxanthin
    Quintile median (μg/dL)3.24.65.97.610.3
    No. of cases/controls142/168139/169140/168128/169143/168
    OR (95% CI)1.001.01 (0.72-1.40)0.95 (0.69-1.33)0.82 (0.59-1.15)0.98 (0.70-1.37)0.67
  • * Reference category.

  • Adjusted for age, time since initial screening, year of blood draw, and study center.