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Table 3 Characteristics of the participants according to the quartiles of DII

From: Association between dietary inflammatory index and infertility of women; Results from RaNCD Cohort Study

Variables

Q1

< -2.02

Q2

-2.02, -1.02

Q3

-1.03, 0.25

Q4

≥ 0.26

P Trend*

Age (years)

42.12 ± 8.41

43.21 ± 8.30

44.09 ± 8.09

46.10 ± 7.85

< 0.001

Weight (kg)

67.66 ± 13.62

69.37 ± 9.44

74.65 ± 11.01

77.16 ± 13.78

< 0.001

BMI (kg/m2)

28.22 ± 5.24

28.63 ± 4.86

29.87 ± 4.55

29.92 ± 4.77

< 0.001

WC (cm)

97.10 ± 12.14

98.84 ± 10.82

99.10 ± 10.41

101.58 ± 11.40

0.005

TC (mg/dl)

182.74 ± 23.71

183.12 ± 32.13

187.35 ± 37.63

192.66 ± 28.17

< 0.001

LDL-C (mg/dl)

97.32 ± 29.59

101.79 ± 26.34

103.54 ± 26.23

105.17 ± 25.46

< 0.001

HDL-C (mg/dl)

51.44 ± 11.2

50.31 ± 10.74

46.6 ± 11.44

44.24 ± 11.42

< 0.001

TG (mg/dl)

128.25 ± 70.43

129.09 ± 68.04

130.11 ± 27.14

130.45 ± 86.52

0.166

FBS (mg/dl)

95.03 ± 25.31

95.19 ± 29.44

96.23 ± 30.02

96.42 ± 29.53

0.852

Smoking%

(CI 95%)

No

91.64 (88.29 to 94.10)

94.28 (91.89 to 96)

95.22 (93.69 to 96.39)

96.03 (95.19 to 96.72)

0.001**

Current

4.46 (2.75 to 7.16)

1.97 (1.06 to 3.63)

1.63 (1.01 to 2.64)

1.31 (0.93 to 1.84)

Former

3.90 (2.32 to 6.48)

3.75 (2.40 to 5.80)

3.15 (2.23 to 4.45)

2.66 (2.10 to 3.37)

Total calorie intake (Kcal/d)

1877.52 ± 131.39

1934.95 ± 186.34

2079.93 ± 144.49

2135.58 ± 175.58

< 0.001

Carbohydrate (Kcal/d)

1287.16 ± 96.43

1286.82 ± 104.16

1289.33 ± 61.42

1294.74 ± 61.40

0.8974

Fat (Kcal/d)

439.64 ± 44.13

443.18 ± 22.52

448.68 ± 27.62

449.06 ± 32.77

0.0725

Protein (Kcal/d)

150.52 ± 14.06

204.88 ± 19.10

341.32 ± 13.49

391.78 ± 22.09

< 0.001

Fiber (g/d)

32.87 ± 2.61

24.86 ± 4.05

18.97 ± 3.27

10.07 ± 1.13

< 0.001

  1. Note: Values are presented as the mean ± SD for variables with normal distribution or median (interquartile) for variables without normal distribution. Q: quartile, BMI: body Mass Index, WC: waist circumference, LDL-C: low density lipoprotein, HDL-C: high density lipoprotein, TC: total cholesterol, TG: triglycerides, FBS: fasting blood sugar, E: energy percent. * P-value was obtained by the One-way ANOVA test between quartiles (the fourth quartile compared to the first quartile) and P < 0.05 were considered as statistically significant. ** P-value was obtained by chi-square test.