Table 5 Odds ratio (OR) and 95% confidence interval (CI) for breast cancer based on Quartiles of DQI indices

DQI-I

 Case/Total (n)

69/128

66/133

63/129

55/130

 Crude model

1.00 (Ref)

1.05(0.59–1.86)

1.14(0.64–2.03)

0.93(0.52–1.65)

0.86

0.074

 Model 1^a

1.00 (Ref)

1.07(0.60–1.91)

1.12(0.62–2.00)

0.93(0.52–1.66)

0.85

0.069

 Model 2 ^b

1.00 (Ref)

0.90(0.48–1.66)

1.05(0.56–1.99)

0.91(0.49–1.69)

0.80

0.026

 Model 3 ^c

1.00 (Ref)

0.89(0.47–1.67)

1.05(0.55–1.99)

0.91(0.49–1.71)

0.80

0.030

MAR

 Case/Total (n)

82/130

62/130

64/130

45/130

 Crude model

1.00 (Ref)

0.66(0.38–1.14)

0.68(0.39–1.19)

0.42(0.24–0.73)

0.77

0.005

 Model 1^a

1.00 (Ref)

0.66(0.38–1.15)

0.73(0.41–1.28)

0.45(0.25–0.79)

0.79

0.012

 Model 2^b

1.00 (Ref)

0.77(0.42–1.40)

0.66(0.36–1.21)

0.44(0.24–0.80)

0.76

0.006

 Model 3^c

1.00 (Ref)

0.72(0.39–1.33)

0.65(0.35–1.20)

0.42(0.23–0.78)

0.76

0.007

DED

 Case/Total (n)

55/130

63/130

63/130

72/130

 Crude model

1.00 (Ref)

1.04(0.60–1.79)

1.02(0.58–1.77)

1.43(0.83–2.48)

1.11

0.230

 Model 1^a

1.00 (Ref)

0.99(0.57–1.71)

0.98(0.56–1.72)

1.44(0.83–2.52)

1.11

0.216

 Model 2^b

1.00 (Ref)

1.11(0.61–2.00)

0.87(0.48–1.59)

1.62(0.88–2.95)

1.12

0.222

 Model 3^c

1.00 (Ref)

1.08(0.59–1.97)

0.84(0.45–1.55)

1.60(0.87–2.95)

1.21

0.244