Table 1 General characteristics of women across tertiles of nutrient-based and food-based oxidative balance score.

From: Association between oxidative balance score and risk of postpartum depression in Iranian women: a prospective cohort study

 

Tertiles of NLOBS

Tertiles of FLOBS

T1

(n = 84)

T2

(n = 80)

T3

(n = 79)

P-value*

T1

(n = 75)

T2

(n = 78)

T3

(n = 90)

P-value*

Score range

10–18

18–23

23–33

 

29–42

42–47

47–59

 

No. cases

84

80

79

 

75

78

90

 

  Age (year)

29.25 ± 6.37

30.72 ± 5.71

32.88 ± 5.75

0.001

29.01 ± 6.37

31.26 ± 6.17

32.20 ± 5.51

0.003

  Marriage duration (year)

7.72 ± 5.81

7.60 ± 4.47

9.14 ± 5.85

0.13

6.78 ± 4.89

8.95 ± 5.24

8.58 ± 5.88

0.02

  Height (cm)

163.02 ± 6.90

162.76 ± 6.52

162.59 ± 5.19

0.90

162.29 ± 6.72

163.79 ± 6.52

162.35 ± 5.51

0.23

  Pre-pregnancy weight (kg)

68.83 ± 13.63

70.91 ± 13.62

68.34 ± 11.17

0.40

70.00 ± 14.38

70.97 ± 11.06

67.42 ± 12.90

0.17

  Pre-delivery weight (kg)

83.75 ± 14.89

82.60 ± 14.23

79.79 ± 11.51

0.16

84.54 ± 15.27

83.53 ± 12.68

78.78 ± 12.62

0.01

  After delivery weight (kg)**

75.05 ± 14.08

74.97 ± 14.14

71.94 ± 10.85

0.23

75.78 ± 14.49

75.39 ± 11.97

71.35 ± 12.69

0.05

  Educational level

   

0.39

   

0.62

     < Diploma

21 (25.0%)

14 (17.5%)

14 (17.7%)

 

17 (22.7%)

13 (16.7%)

19 (21.1%)

 

    Diploma ≤ 

63 (75.0%)

66 (82.5%)

65 (82.3%)

 

58 (77.3%)

65 (83.3%)

71 (78.9%)

 

  Occupation

   

0.54

   

0.13

    Housewife

76 (90.5%)

70 (87.5%)

67 (84.8%)

 

69 (92.0%)

70 (89.7%)

74 (82.2%)

 

    Employed

8 (9.5%)

10 (12.5%)

12 (15.2%)

 

6 (8.0%)

8 (10.3%)

16 (17.8%)

 

  Socioeconomic status

   

0.38

   

0.37

    Low

28 (33.3%)

20 (25.0%)

16 (20.3%)

 

17 (22.7%)

23 (29.5%)

24 (26.7%)

 

    Moderate

35 (41.7%)

34 (42.5%)

36 (45.6%)

 

36 (48.0%)

36 (46.2%)

33 (36.7%)

 

    High

21 (25.0%)

26 (32.5%)

27 (34.2%)

 

22 (29.3%)

19 (24.4%)

33 (36.7%)

 

  Pregnancy satisfaction

   

0.23

   

0.55

    Wanted

69 (82.1%)

57 (71.3%)

62 (78.5%)

 

56 (74.7%)

59 (75.6%)

73 (81.1%)

 

    Unwanted

15 (17.9%)

23 (28.8%)

17 (21.5%)

 

19 (25.3%)

19 (24.4%)

17 (18.9%)

 

  Parity

   

0.27

   

0.04

    Primiparous

40 (47.6%)

29 (36.3%)

30 (38.0%)

 

38 (50.7%)

24 (30.8%)

37 (41.1%)

 

    Multiparous

44 (52.4%)

51 (63.8%)

49 (62.0%)

 

37 (49.3%)

54 (69.2%)

53 (58.9%)

 

  Pre-pregnancy BMI status

   

0.93

   

0.04

    Normal weight

38 (45.2%)

36 (45.0%)

38 (48.1%)

 

27 (36.0%)

32 (41.0%)

53 (58.9%)

 

    Overweight

33 (39.3%)

29 (36.3%)

30 (38.0%)

 

34 (45.3%)

32 (41.0%)

26 (28.9%)

 

    Obese

13 (15.5%)

15 (18.8%)

11 (13.9%)

 

14 (18.7%)

14 (17.9%)

11 (12.2%)

 

  Gestational weight gain

   

0.001

   

 < 0.0001

    Insufficient

18 (21.4%)

23 (28.8%)

21 (26.6%)

 

12 (16.0%)

20 (25.6%)

30 (33.3%)

 

    Sufficient

19 (22.6%)

26 (32.5%)

38 (48.1%)

 

17 (22.7%)

24 (30.8%)

42 (46.7%)

 

    Excess

47 (56.0%)

31 (38.8%)

20 (25.3%)

 

46 (61.3%)

34 (43.6%)

18 (20.0%)

 

  Smoking status

   

0.07

   

0.01

    Never

76 (90.5%)

78 (97.5%)

78 (98.7%)

 

67 (89.3%)

75 (96.2%)

90 (100.0%)

 

    Former

6 (7.1%)

2 (2.5%)

1 (1.3%)

 

6 (8.0%)

3 (3.8%)

0 (0.0%)

 

    Current

2 (2.4%)

0 (0.0%)

0 (0.0%)

 

2 (2.7%)

0 (0.0%)

0 (0.0%)

 

  Passive smoking

   

0.06

   

 < 0.0001

    Current passive smoking

25 (29.8%)

16 (20.0%)

12 (15.2%)

 

28 (37.3%)

16 (20.5%)

9 (10.0%)

 

    Passive smoking before pregnancy

7 (8.3%)

5 (6.3%)

2 (2.5%)

 

8 (10.7%)

3 (3.8%)

3 (3.3%)

 

    Never

52 (61.9%)

59 (73.8%)

65 (82.3%)

 

39 (52.0%)

59 (75.6%)

78 (86.7%)

 

  Abortion history

   

0.71

   

0.64

    Yes

29 (34.5%)

23 (28.8%)

26 (32.9%)

 

21 (28.0%)

27 (34.6%)

30 (33.3%)

 

    No

55 (65.5%)

57 (71.3%)

53 (67.1%)

 

54 (72.0%)

51 (65.4%)

60 (66.7%)

 

  Physical activity

   

0.003

   

0.001

    Low

39 (46.4%)

19 (23.8%)

17 (21.5%)

 

34 (45.3%)

24 (30.8%)

17 (18.9%)

 

    Moderate

27 (32.1%)

29 (36.3%)

31 (39.2%)

 

21 (28.0%)

34 (43.6%)

32 (35.6%)

 

    High

18 (21.4%)

32 (40.0%)

31 (39.2%)

 

20 (26.7%)

20 (25.6%)

41 (45.6%)

 

  Type of delivery

   

0.96

   

0.36

    Natural delivery

23 (27.4%)

23 (28.8%)

23 (29.1%)

 

25 (33.3%)

18 (23.1%)

26 (28.9%)

 

    Caesarean delivery

61 (72.6%)

57 (71.3%)

56 (70.9%)

 

50 (66.7%)

60 (76.9%)

64 (71.1%)

 

  Preterm birth

   

0.42

   

0.46

    Yes

13 (15.5%)

7 (8.8%)

10 (12.7%)

 

7 (9.3%)

9 (11.5%)

14 (15.6%)

 

    No

71 (84.5%)

73 (91.3%)

69 (87.3%)

 

68 (90.7%)

69 (88.5%)

76 (84.4%)

 

  Infant feeding

   

0.74

   

0.49

    Breast milk

42 (50.0%)

36 (45.0%)

33 (41.8%)

 

35 (46.7%)

39 (50.0%)

37 (41.1%)

 

    Milk powder

9 (10.7%)

11 (13.8%)

8 (10.1%)

 

10 (13.3%)

10 (12.8%)

8 (8.9%)

 

    Both

33 (39.3%)

33 (41.3%)

38 (48.1%)

 

30 (40.0%)

29 (37.2%)

45 (50.02%)

 

  Gestational diabetes

   

0.08

   

0.06

    Yes

13 (15.5%)

15 (18.8%)

23 (29.1%)

 

9 (12.0%)

18 (23.1%)

24 (26.7%)

 

    No

71 (84.5%)

65 (81.3%)

56 (70.9%)

 

66 (88.0%)

60 (76.9%)

66 (73.3%)

 

  Preeclampsia

   

0.41

   

0.27

    Yes

6 (7.1%)

3 (3.8%)

7 (8.9%)

 

4 (5.3%)

8 (10.3%)

4 (4.4%)

 

    No

78 (92.9%)

77 (96.3%)

72 (91.1%)

 

71 (94.7%)

70 (89.7%)

86 (95.6%)

 

  Thyroid disorders

   

0.11

   

0.69

    Yes

16 (19.0%)

10 (12.5%)

20 (25.3%)

 

14 (18.7%)

17 (21.8%)

15 (16.7%)

 

    No

68 (81.0%)

70 (87.5%)

59 (74.7%)

 

61 (81.3%)

61 (78.2%)

75 (83.3%)

 

  Infant gender

   

0.23

   

0.05

    Boy

37 (44.0%)

32 (40.0%)

42 (53.2%)

 

29 (38.7%)

32 (41.0%)

50 (55.6%)

 

    Girl

47 (56.0%)

48 (60.0%)

37 (46.8%)

 

46 (61.3%)

46 (59.0%)

40 (44.4%)

 

  Infant hospitalization

   

0.10

   

0.60

    Yes

43 (51.2%)

28 (35.0%)

36 (45.6%)

 

30 (40.0%)

34 (43.6%)

43 (47.8%)

 

    No

41 (48.8%)

52 (65.0%)

43 (54.4%)

 

45 (60.0%)

44 (56.4%)

47 (52.2%)

 

  Infant disease

   

0.74

   

0.47

    Yes

23 (27.4%)

20 (25.0%)

24 (30.4%)

 

17 (22.7%)

22 (28.2%)

28 (31.1%)

 

    No

61 (72.6%)

60 (75.0%)

55 (69.6%)

 

58 (77.3%)

56 (71.8%)

62 (68.9%)

 
  1. Data are presented as mean ± SD or n (%).
  2. SES: Socioeconomic Status, GDM: gestational diabetes mellitus.
  3. *Obtained from the ANOVA for continuous variables and Chi-square test for categorical variables.
  4. **Weight 4 to 6 weeks after delivery.