Table 2 Associations between nighttime eating behavior and breast cancer in Hong Kong Chinese women

 Never^e

762 (82.6)

774 (84.8)

1.00 (ref)

1.00 (ref)

1.00 (ref)

 Ever

160 (17.4)

139 (15.2)

1.31 (1.02–1.68)

1.51 (1.08–2.12)

1.50 (1.06–2.12)

0.02

 Never^e

762 (82.6)

774 (84.8)

1.00 (ref)

1.00 (ref)

1.00 (ref)

 Staple food

123 (13.3)

86 (9.4)

1.65 (1.22–2.22)

2.16 (1.43–3.28)

2.16 (1.42–3.29)

<0.001

 Snacks

37 (4.0)

53 (5.8)

0.75 (0.48–1.15)

0.75 (0.44–1.29)

0.74 (0.43–1.27)

0.27

 Never^e

762 (82.6)

774 (84.8)

1.00 (ref)

1.00 (ref)

1.00 (ref)

 Noodles

70 (7.6)

40 (4.4)

1.93 (1.29–2.90)

2.78 (1.58–4.87)

2.79 (1.58–4.94)

<0.001

 Rice

62 (6.7)

37 (4.1)

1.90 (1.24–2.91)

2.53 (1.40–4.47)

2.58 (1.42–4.69)

0.002

 Baked goods

30 (3.3)

37 (4.1)

0.88 (0.54–1.44)

1.27 (0.71–2.28)

1.19 (0.66–2.16)

0.56

 Meat

31 (3.4)

23 (2.9)

1.48 (0.85–2.57)

1.89 (0.92–3.88)

1.73 (0.84–3.59)

0.14

 Vegetable

24 (2.6)

22 (2.4)

1.09 (0.76–2.11)

1.15 (0.67–2.67)

1.14 (0.63–2.55)

0.61

 Fruit

15 (1.6)

13 (1.4)

1.22 (0.58–2.59)

1.18 (0.51–2.74)

1.20 (0.51–2.83)

0.68