Table 3.

Intake of selected food groups among women in Shanghai, China and risk of breast cancer

Quartiles of intake (servings)
Food group1234P for trend
Total fruit and vegetable≤2.3/d<3.0/d<3.8/d≥3.8/d
    No. cases/controls103/26080/27076/267119/273
    OR (95% CI)*1.000.69 (0.43-1.12)0.58 (0.35-0.94)0.47 (0.29-0.77)0.002
    OR (95% CI)1.000.71 (0.44-1.14)0.59 (0.36-0.96)0.48 (0.29-0.78)0.003
    Fruit≤3.9/wk<5.9/wk<1.2/d≥1.2/d
    No. cases/controls112/26983/26693/26890/267
    OR (95% CI)*1.000.60 (0.37-0.97)0.49 (0.31-0.78)0.35 (0.22-0.57)<0.001
    OR (95% CI)1.000.59 (0.36-0.96)0.48 (0.30-0.76)0.34 (0.21-0.55)<0.001
    Vegetable (unsalted)≤1.5/d<2/d<2.6/d≥2.6/d
    No. cases/controls118/26880/26574/269106/268
    OR (95% CI)*1.000.80 (0.51-1.26)0.74 (0.46-1.18)0.59 (0.37-0.93)0.02
    OR (95% CI)1.000.81 (0.51-1.27)0.76 (0.48-1.22)0.60 (0.38-0.94)0.03
Salted/preserved vegetable≤0.5/mo<1.3/mo<1.1/wk≥1.1/wk
    No. cases/controls84/29367/24377/268150/266
    OR (95% CI)*1.000.71 (0.44-1.13)0.71 (0.45-1.11)0.87 (0.57-1.32)0.64
    OR (95% CI)1.000.72 (0.45-1.16)0.70 (0.45-1.11)0.87 (0.57-1.32)0.61
Total soyfood≤2.6/wk<4.4/wk<1.1/d≥1.1/d
    No. cases/controls78/27287/263100/269113/266
    OR (95% CI)*1.000.97 (0.61-1.54)1.30 (0.82-2.06)1.06 (0.67-1.66)0.57
    OR (95% CI)1.000.96 (0.60-1.53)1.33 (0.84-2.12)1.07 (0.68-1.69)0.51
    Unfermented soyfood≤2.3/wk<4.2/wk<1.0/d≥1.0/d
    No. cases/controls79/26991/26696/268112/267
    OR (95% CI)*1.001.06 (0.67-1.67)1.22 (0.77-1.92)1.20 (0.77-1.88)0.36
    OR (95% CI)1.001.04 (0.66-1.66)1.23 (0.77-1.95)1.22 (0.78-1.92)0.31
Fermented beancurd0/y>0/y
    No. cases/controls135/446243/624
    OR (95% CI)*1.000.92 (0.67-1.27)0.92
    OR (95% CI)1.000.92 (0.67-1.27)0.62
Other legumes≤1.9/wk<2.7/wk<3.9/wk≥3.9/wk
    No. cases/controls102/26877/26895/266104/268
    OR (95% CI)*1.000.72 (0.45-1.15)1.00 (0.63-1.58)0.76 (0.48-1.21)0.46
    OR (95% CI)1.000.73 (0.46-1.17)1.01 (0.64-1.60)0.78 (0.49-1.24)0.53
Milk products≤1.0/mo<2.6/wk<1.0/d≥1.0/d
    No. cases/controls134/25294/279101/26749/272
    OR (95% CI)*1.000.91 (0.60-1.38)1.15 (0.74-1.78)0.91 (0.54-1.53)0.97
    OR (95% CI)1.000.89 (0.58-1.35)1.12 (0.71-1.74)0.87 (0.52-1.47)0.90
Total meat (unsalted)≤2.9/wk<4.2/wk<5.9/wk≥5.9/wk
    No. cases/controls83/26980/26897/269118/264
    OR (95% CI)*1.001.02 (0.63-1.64)1.43 (0.89-2.32)1.12 (0.70-1.80)0.46
    OR (95% CI)1.001.00 (0.62-1.61)1.42 (0.88-2.30)1.12 (0.70-1.80)0.45
    Red meat≤3.0/wk<4.4/wk<6.1/wk≥6.1/wk
    No. cases/controls84/27084/26685/269125/265
    OR (95% CI)*1.001.11 (0.69-1.78)1.40 (0.86-2.29)1.22 (0.76-1.96)0.34
    OR (95% CI)1.001.10 (0.69-1.77)1.41 (0.87-2.31)1.24 (0.77-1.99)0.30
    Poultry≤2/mo<4/mo<1.2/wk>1.2/wk
    No. cases/controls106/255102/27091/28779/258
    OR (95% CI)*1.001.03 (0.68-1.56)1.08 (0.70-1.67)0.95 (0.60-1.52)0.95
    OR (95% CI)1.001.04 (0.68-1.58)1.10 (0.71-1.70)0.94 (0.59-1.49)0.90
    Eggs≤2.0/wk<3.0/wk<6.0/wk≥6.0/wk
    No. cases/controls129/25768/190116/34665/277
    OR (95% CI)*1.000.71 (0.45-1.12)0.67 (0.44-1.01)0.56 (0.35-0.91)0.02
    OR (95% CI)1.000.72 (0.45-1.13)0.68 (0.45-1.02)0.56 (0.35-0.91)0.02
Total seafood≤1.9/wk<2.9/wk<4.3/wk≥4.3/wk
    No. cases/controls87/27382/274105/260104/263
    OR (95% CI)*1.001.23 (0.78-1.94)1.62 (1.02-2.55)1.28 (0.81-2.01)0.19
    OR (95% CI)1.001.23 (0.78-1.96)1.62 (1.03-2.57)1.28 (0.81-2.02)0.20
    Fish (unsalted)≤1.3/wk<2.2/wk<3.2/wk≥4.3/wk
    No. cases/controls74/27396/32096/233112/244
    OR (95% CI)*1.001.50 (0.95-2.36)1.64 (1.02-2.65)1.57 (0.98-2.49)0.07
    OR (95% CI)1.001.50 (0.95-2.37)1.63 (1.01-2.63)1.55 (0.97-2.48)0.08
    Shellfish≤1.0/mo<2.0/mo<1.0/wk≥1.0/wk
    No. cases/controls84/15391/26189/234114/422
    OR (95% CI)*1.000.73 (0.45-1.16)0.82 (0.50-1.34)0.75 (0.47-1.19)0.38
    OR (95% CI)1.000.74 (0.46-1.19)0.82 (0.50-1.34)0.76 (0.48-1.20)0.39
    Cured meats≤0.5/mo<1.2/mo≥2.0/mo
    No. cases/controls148/395109/358121/317
    OR (95% CI)*1.001.08 (0.74-1.58)1.17 (0.81-1.70)0.40
    OR (95% CI)1.001.10 (0.75-1.61)1.20 (0.82-1.74)0.35
Rice≤2.0/d>2.0/d
    No. cases/controls70/386308/684
    OR (95% CI)*1.001.42 (0.97-2.08)0.07
    OR (95% CI)1.001.43 (0.98-2.10)0.07
Grains except rice and corn≤3.2/wk<5.5/wk<1.2/d≥1.2/d
    No. cases/controls113/274103/26292/26870/266
    OR (95% CI)*1.001.30 (0.84-1.99)1.34 (0.85-2.11)1.31 (0.78-2.23)0.26
    OR (95% CI)1.001.27 (0.82-1.95)1.32 (0.84-2.08)1.28 (0.76-2.18)0.30
Sesame oil (used in cooking)0/y>0/y
    No. cases/controls122/146256/924
    OR (95% CI)*1.000.59 (0.41-0.84)0.004
    OR (95% CI)1.000.58 (0.41-0.84)0.004
Soy oil (used in cooking)≤2.4/mo<3.2/mo<4.1/mo≥4.1/mo
    No. cases/controls107/26899/295101/26571/242
    OR (95% CI)*1.000.83 (0.54-1.28)1.00 (0.65-1.54)0.70 (0.43-1.12)0.28
    OR (95% CI)1.000.85 (0.55-1.31)0.99 (0.64-1.53)0.71 (0.44-1.15)0.29
Total preserved/ cured foods≤1.7/mo<3.6/mo<1.9/wk≥1.9/wk
    No. cases/controls79/27172/26875/266152/265
    OR (95% CI)*1.000.93 (0.58-1.47)0.77 (0.48-1.24)1.05 (0.69-1.61)0.85
    OR (95% CI)1.000.95 (0.60-1.52)0.77 (0.48-1.24)1.07 (0.70-1.63)0.84
Fried foods≤2.8/mo<1.2/wk<2.4/wk≥2.4/wk
    No. cases/controls90/26373/277102/265113/265
    OR (95% CI)*1.000.55 (0.35-0.89)0.72 (0.45-1.14)0.80 (0.50-1.26)0.66
    OR (95% CI)1.000.54 (0.34-0.87)0.70 (0.44-1.12)0.77 (0.49-1.23)0.57
Desserts≤1.0/wk<2.5/wk<6.0/wk≥6.0/wk
    No. cases/controls140/27886/26293/26359/267
    OR (95% CI)*1.000.84 (0.55-1.27)1.22 (0.79-1.87)1.13 (0.69-1.86)0.41
    OR (95% CI)1.000.83 (0.55-1.26)1.21 (0.79-1.87)1.09 (0.67-1.81)0.46
  • NOTE: All analyses stratified by year of interview (1995-1996, 1997, 1998-1999, and 2000-2001), using conditional logistic regression.

  • * Adjusted for age and total energy intake.

  • Adjusted for age, total energy intake, and breast-feeding.

  • Preserved vegetables and cured meats and fish.