Table 1 General characteristics separately across tertiles of AHEI-2010

Age, year, median (Q₁-Q₃)

26 (24–33)

35 (24–40)

33 (25–36)

0.020*

29 (25–33)

30 (24–33)

37 (30–39)

< 0.001*

Familial history of BV, Yes

13 (24.5)

13 (25.5)

11 (23.4)

0.972

47 (56.6)

23 (50)

7 (50)

0.735

Education

0.546

0.136

Primary/secondary school

13 (24.5)

10 (19.6)

16 (34)

17 (20.5)

14 (30.4)

5 (35.7)

Undergraduate

24 (45.3)

27 (52.9)

19 (40.4)

42 (50.6)

26 (56.5)

8 (57.1)

Graduate

16 (30.2)

14 (27.5)

12 (25.5)

24 (28.9)

6 (13)

1 (7.2)

Cigarette per day

0.761

0.003*

0

52 (98.1)

51 (100)

46 (97.9)

60 (72.3)

44 (95.7)

14 (100)

1–2

0

0

0

10 (12)

2 (4.3)

0

≥ 3

1 (1.9)

0

1 (2.1)

13 (15.7)

0

0

Employment status, Employed

14 (26.4)

11 (21.6)

17 (36.2)

0.262

26 (31.3)

14 (30.4)

3 (21.4)

0.827

Monthly family income, < 250 US $

43 (81.1)

41 (80.4)

37 (78.7)

0.954

66 (79.5)

35 (76.1)

9 (64.3)

0.440

Number of pregnancies

0.208

0.049*

0

30 (56.6)

21 (41.2)

19 (40.4)

41 (49.4)

20 (43.5)

2 (14.3)

1–2

18 (34)

22 (43.1)

25 (53.2)

35 (42.2)

23 (50)

8 (57.1)

≥ 3

5 (9.4)

8 (15.7)

3 (6.4)

7 (8.4)

3 (6.5)

4 (28.6)

Menstrual cycle, Regular

30 (56.6)

40 (78.4)

32 (68.1)

0.059

55 (66.3)

28 (60.9)

11 (78.6)

0.506

Number of sexual partners in the previous month

0.053

0.127

0

23 (43.4)

19 (37.3)

11 (23.4)

31 (37.4)

16 (34.8)

1 (7.1)

1

27 (50.9)

31 (60.8)

36 (76.6)

49 (59)

27 (58.7)

13 (92.9)

≥ 2

3 (5.7)

1 (2)

0

3 (3.6)

3 (6.5)

0

Physical activity (MET/h/d), median (Q₁-Q₃)

40.5

(36–46)

39.7

(35.7–46.7)

40.6

(37.3–46.9)

0.891

39.8

(35.1–44.3)

39.8

(36.2–44.8)

41.2

(35.9–49.9)

0.770

Weight (Kg)

64 (56-71.5)

65 (58–72)

67 (57–76)

0.631

69 (60–79)

66 (64–75)

69 (59.75–76.25)

0.710

Height (cm)

162 (158.5–165)

161 (157–165)

162 (158–165)

0.424

163 (159–167)

164 (160–167)

162.5 (157-169.75)

0.662

BMI (Kg/m²), median (Q1-Q3)

23.9

(21.8–26.4)

24.8

(22.7–28.0)

24.6

(22-28.6)

0.326

26.6

(22.9–29.1)

25.1

(23.7–28.3)

25.4

(24.0-28.5)

0.283

WC (cm), median (Q₁-Q₃)

78

(68.5–90)

82

(77–95)

84

(71–95)

0.402

87

(76–95)

85

(67.7–90)

100

(92-103.5)

0.022*

Supplements

Calcium 500 mg/day, Yes

10 (18.9)

8 (15.7)

6 (12.8)

0.706

6 (7.2)

2 (4.3)

2 (14.3)

0.367

Folate 400 µg/day, Yes

8 (15.1)

7 (13.7)

7 (14.9)

0.978

17 (20.5)

11 (23.9)

2 (14.3)

0.787

Vitamin D 50,000 IU/month, Yes

23 (43.4)

18 (35.3)

25 (53.2)

0.203

24 (28.9)

22 (47.8)

3 (21.4)

0.058

Iron 30 mg/day, Yes

11 (20.8)

17 (33.3)

13 (27.7)

0.352

12 (14.5)

14 (30.4)

0

0.014*

Omega 3 1–3 gr/day, Yes

3 (5.7)

2 (3.9)

3 (6.4)

0.905

3 (3.6)

4 (8.7)

0

0.329