Table 3 ORs and 95% Cls for quartiles of dietary nutrients intake with risk of cervical intraepithelial neoplasia grades 2 and above among 2304 women in the study^a

Folate

 Median intake (μg/day)

297

381

488

764

 No. of cases

75

57

49

56

 Model 1

1.35 (0.93–1.97)

1.04 (0.70–1.54)

0.85 (0.56–1.28)

1.00 (reference)

 Model 2

1.49 (1.01–2.21)

1.08 (0.72–1.62)

0.89 (0.58–1.35)

1.00 (reference)

 Model 3

1.55 (1.03–2.33)

1.18 (0.77–1.79)

0.94 (0.61–1.46)

1.00 (reference)

Vitamin B1

 Median intake (mg/day)

1.1

1.4

1.9

2.7

 No. of cases

72

72

35

58

 Model 1

1.24 (0.84–1.82)

1.41 (0.96–2.06)

0.59 (0.39–0.90)

1.00 (reference)

 Model 2

1.29 (0.86–1.93)

1.34 (0.90–1.99)

0.55 (0.36–0.84)

1.00 (reference)

 Model 3

1.49 (0.97–2.28)

1.34 (0.89–2.04)

0.56 (0.36–0.87)

1.00 (reference)

Vitamin B2

 Median intake (mg/day)

1.1

1.4

1.8

2.7

 No. of cases

62

63

51

61

 Model 1

0.95 (0.65–1.39)

1.07 (0.73–1.57)

0.83 (0.56–1.23)

1.00 (reference)

 Model 2

1.07 (0.72–1.58)

1.12 (0.75–1.66)

0.92 (0.61–1.38)

1.00 (reference)

 Model 3

1.18 (0.78–1.77)

1.11 (0.73–1.68)

0.96 (0.63–1.47)

1.00 (reference)

Vitamin B6

 Median intake (mg/day)

1.7

2.1

2.6

3.9

 No. of cases

69

65

47

56

 Model 1

1.27 (0.87–1.86)

1.13 (0.77–1.66)

0.83 (0.55–1.25)

1.00 (reference)

 Model 2

1.42 (0.96–2.11)

1.18 (0.79–1.75)

0.87 (0.57–1.32)

1.00 (reference)

 Model 3

1.63 (1.08–2.46)

1.33 (0.88–2.01)

0.93 (0.60–1.44)

1.00 (reference)

Vitamin C

 Median intake (mg/day)

46.0

62.8

86.9

138.9

 No. of cases

73

56

57

51

 Model 1

1.44 (0.98–2.11)

1.13 (0.76–1.70)

1.14 (0.76–1.71)

1.00 (reference)

 Model 2

1.56 (1.05–2.33)

1.16 (0.76–1.76)

1.15 (0.76–1.75)

1.00 (reference)

 Model 3

1.59 (1.05–2.42)

1.16 (0.75–1.79)

1.11 (0.72–1.71)

1.00 (reference)

Vitamin E

 Median intake (mg/day)

4.4

8.8

10.8

21.7

 No. of cases

50

67

59

61

 Model 1

0.76 (0.51–1.13)

1.03 (0.71–1.50)

1.02 (0.69–1.50)

1.00 (reference)

 Model 2

0.92 (0.61–1.40)

1.13 (0.77–1.66)

1.08 (0.72–1.60)

1.00 (reference)

 Model 3

0.93 (0.60–1.43)

1.29 (0.86–1.93)

1.04 (0.69–1.58)

1.00 (reference)

Vitamin K

 Median intake (μg/day)

133.0

194.0

285.0

534.0

 No. of cases

61

71

51

54

 Model 1

1.12 (0.77–1.65)

1.42 (0.96–2.10)

1.01 (0.68–1.50)

1.00 (reference)

 Model 2

1.20 (0.81–1.79)

1.53 (1.02–2.29)

1.05 (0.70–1.58)

1.00 (reference)

 Model 3

1.30 (0.86–1.98)

1.60 (1.05–2.44)

1.24 (0.81–1.89)

1.00 (reference)

Niacin

 Median intake (mg/day)

17.7

21.6

27.9

42.8

 No. of cases

68

60

54

55

 Model 1

1.30 (0.88–1.92)

1.08 (0.73–1.59)

1.02 (0.69–1.51)

1.00 (reference)

 Model 2

1.40 (0.94–2.09)

1.14 (0.76–1.70)

0.98 (0.65–1.47)

1.00 (reference)

 Model 3

1.65 (1.08–2.51)

1.32 (0.87–2.01)

1.09 (0.71–1.66)

1.00 (reference)

Dietary fiber

 Median intake (g/day)

27.4

34.5

43.7

63.2

 No. of cases

68

64

49

56

 Model 1

1.23 (0.84–1.81)

1.18 (0.80–1.73)

0.84 (0.56–1.26)

1.00 (reference)

 Model 2

1.31 (0.88–1.95)

1.18 (0.79–1.76)

0.80 (0.53–1.22)

1.00 (reference)

 Model 3

1.50 (0.99–2.27)

1.16 (0.76–1.76)

0.87 (0.56–1.34)

1.00 (reference)