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Table 1 Samples demographic characteristics across tertile (Q) of DII for 150 women in Beijing Northern Hospital

From: Association between dietary inflammatory index and bone density in lactating women at 6 months postpartum: a longitudinal study

Characteristics

Tertiles of DII

p a

Q1(n = 49)

Q2(n = 51)

Q3(n = 50)

Age, years

32.94 (4.67)

31.27 (3.6)

31 (4.3)

0.120

BMI6,kg/m2

22.2 (3.75)

22.93 (3.53)

23.5 (3.63)

0.331

Educational level, n,%

0.641

 High school or below

4 (7.1)

5 (9.8)

1 (2.0)

 

 College

22 (45.2)

29 (56.1)

25 (49.2)

 

 Postgraduate or up

23 (47.6)

17 (34.1)

24 (48.8)

 

Time spent for physical activity, n,%

0.379

 < 1 h/week

16 (33.3)

10 (20.5)

16 (31.6)

 

 1-2 h/week

25 (50.0)

31 (61.4)

24 (47.4)

 

 2-4 h/week

6 (11.9)

6 (11.4)

10 (21.1)

 

 4-6 h/week

2 (4.8)

4 (6.8)

0 (0)

 

 T0

−1.2 (0.79)

−1.03 (0.77)

−0.8 (0.91)

0.081

 T6

−1.26 (0.84)

− 1.04 (0.79)

− 0.76 (1.11)

0.127

 Energy intake kcal/d

3164.37 (1009.32)

2060.79 (806.64)

1345.41 (359.32)

< 0.001

 Calcium supplement, g/d

2.82 (11.42)

0.37 (0.41)

0.25 (0.28)

0.208

 Vitamin D,IU/d

110.92 (144.09)

200.28 (305.16)

116.87 (172.46)

0.174

Multivitamin use, n,%

0.890

 Yes

29 (58.5)

32 (62.5)

32 (63.4)

 

 No

20 (41.5)

19 (37.5)

18 (36.6)

 

 METs

10.7 (20.47)

8.8 (14.38)

3.74 (4.5)

0.142

 Menarche, age, years

13.42 (1.63)

12.91 (1.79)

13.36 (1.52)

0.390

 Pregnancy

1.97 (1.21)

1.58 (0.83)

1.52 (0.76)

0.100

 Parity, times

1.69 (1.19)

1.27 (0.45)

1.24 (0.44)

0.030

Calf Cramp, n,%

0.181

 Yes

18 (34.1)

9 (17.1)

13 (26.8)

 

 No

31 (65.9)

42 (73.2)

37 (65.9)

 

Feeding styles (0-6 month), n,%

0.771

 Breastfeeding

26 (61.9)

27 (65.9)

28 (68.3)

 

 Mixed feeding

14 (33.3)

11 (26.8)

9 (22.0)

 

 Artificial feeding

2 (4.8)

3 (7.3)

4 (9.8)

 

Complementary foods, n,%

0.920

 Yes

43 (88.3)

45 (87.8)

43 (85.4)

 

 No

6 (11.9)

6 (12.2)

7 (14.6)

 

 Time of Complementary food

5.56 (0.52)

5.42 (0.55)

5.55 (0.63)

0.571

  1. Data are mean (SD) for normally distributed variables and % (n) for categorical variables.
  2. Note. BMI6 = BMI (kg/m2) at 6 months postpartum; T0 = baseline T-score at 1 month postpartum; T6 = follow-up T-score at 6 months postpartum
  3. a One-way analysis of variance (ANOVA) was used for difference in participants’ characteristics across tertiles of DII and chi-square test for categorical variables