Table 3 Risk for breast cancer according to quartiles of the Carbohydrate, glycemic index (GI), glycemic load (GL) dietary and carbohydrate quality index (CQI)

  No.of cases/controls (461/495)

121/118

119/120

114/125

107/132

  Crude

1

0.96 (0.67–1.38)

0.88 (0.62–1.27)

0.79 (0.55–1.13)

0.17

  Model 1^b

1

1.05 (0.72–1.53)

0.91 (0.63–1.34)

0.75 (0.52–1.08)

0.10

  Model 2^c

1

0.97 (0.65–1.44)

0.85 (0.58–1.25)

0.74 (0.50–1.08)

0.09

 No.of cases/controls (461/495)

110/128

106/133

127/117

123/116

  Crude

1

0.93 (0.65–1.34)

1.22 (0.85–1.75)

1.24 (0.86–1.76)

0.11

  Model 1

1

0.95 (0.65–1.39)

1.33 (0.91–1.92)

1.39 (0.96–2.01)

0.02

  Model 2

1

1.04 (0.69–1.54)

1.34 (0.91–1.97)

1.41 (0.96–2.07)

0.04

  No.of cases/controls (452/494)

116/123

114/125

115/124

116/123

  Crude

1

0.96 (0.67–1.38)

0.98(0.68–1.40)

1.00 (0.69–1.43)

0.97

  Model 1

1

1.02 (0.70–1.50)

1.01 (0.69–1.48)

0.96 (0.67–1.39)

0.85

 Model 2

1

0.95 (0.64–1.42)

0.91 (0.61–1.34)

0.94 (0.64–1.37)

0.71

  No.of cases/controls (452/494)

126/113

117/122

113/126

105/134

g

  Crude

1

0.82 (0.58–1.18)

0.87 (0.61–1.24)

0.69 (0.48–0.99)

0.07

  Model 1

1

0.81 (0.56–1.16)

0.81 (0.56–1.15)

0.61 (0.42–0.89)

0.01

  Model 2

0.86 (0.59–1.25)

0.85 (0.59–1.24)

0.63 (0.43–0.94)

0.03

  No.of cases/controls (300/325)

75/82

80/76

79/77

66/90

  Crude

1

1.09 (0.70–1.69)

1.02 (0.65–1.59)

0.87 (0.55–1.36)

0.51

  Model 1

1

1.24 (0.77–2.00)

1.05 (0.66–1.67)

0.82 (0.52–1.31)

0.33

  Model 2

1.12 (0.68–1.84)

0.98 (0.61–1.59)

0.82 (0.51–1.33)

0.37

 No.of cases/controls (300/325)

66/91

74/82

77/79

83/73

  Crude

1

1.21 (0.75–1.98)

1.47 (0.92–2.34)

1.63 (1.02–2.60)

0.02

  Model 1

1

1.21 (0.74–1.98)

1.58 (0.98–2.53)

1.71 (1.06–2.74)

0.01

  Model 2

1.35 (0.80–2.26)

1.62 (0.98–2.67)

1.85 (1.12–3.07)

0.01

  No.of cases/controls (300/325)

76/81

71/85

74/82

79/77

  Crude

1

0.99 (0.62–1.56)

0.97 (0.62–1.51)

1.12 (0.72–1.75)

0.63

  Model 1

1

1.11 (0.68–1.81)

1.04 (0.65–1.65)

1.13 (0.72–1.77)

0.67

  Model 2

1.04 (0.62–1.73)

0.92 (0.57–1.49)

1.14 (0.71–1.81)

0.70

 No.of cases/controls (300/325)

81/76

76/80

79/77

64/92

  Crude

1

0.89 (0.57–1.38)

0.95 (0.61–1.47)

0.68 (0.43–1.06)

0.14

  Model 1

1

0.88 (0.56–1.38)

0.92 (0.59–1.44)

0.57 (0.36–0.91)

0.03

  Model 2

1

0.84 (0.53–1.35)

0.94 (0.59–1.49)

0.55 (0.34–0.90)

0.04

 No.of cases/controls (152/160)

44/34

37/41

32/46

39/39

  Crude

1

0.75 (0.40–1.39)

0.54 (0.28–1.03)

0.77 (0.42–1.41)

0.28

  Model 1

1

0.69 (0.36–1.31)

0.51 (0.26–0.98)

0.79 (0.43–1.45)

0.32

  Model 2

0.63 (0.32–1.24)

0.40 (0.19–0.82)

0.77 (0.41–1.46)

0.25

 No.of cases/controls (152/160)

39/39

37/41

36/42

40/38

  Crude

1

0.80 (0.42–1.52)

0.80 (0.42–1.52)

1.04 (0.56–1.91)

0.86

  Model 1

1

0.83 (0.43–1.58)

0.83 (0.43–1.59)

1.05 (0.57–1.94)

0.82

  Model 2

1

0.89 (0.45–1.75)

0.86 (0.43–1.71)

1.01 (0.53–1.91)

0.97

 No.of cases/controls (152/160)

41/37

40/38

37/41

34/44

  crude

1

0.85 (0.46–1.60)

0.88 (0.47–1.64)

0.79 (0.42–1.48)

0.50

  Model 1

1

0.82 (0.43–1.57)

0.89 (0.46–1.70)

0.78 (0.41–1.46)

0.51

  Model 2

1

0.74 (0.37–1.47)

0.78 (0.39–1.54)

0.73 (0.38–1.40)

0.40

  No.of cases/controls (152/160)

43/35

40/38

31/47

38/40

  Crude

1

0.95 (0.51–1.77)

0.52 (0.26–1.02)

0.82 (0.45–1.51)

0.28

  Model 1

1

0.96 (0.51–1.78)

0.52 (0.26–1.02)

0.83 (0.45–1.53)

0.29

  Model 2

1.03 (0.53–1.99)

0.59 (0.29–1.20)

0.87 (0.46–1.66)

0.41