Table 1 Socioeconomic characteristics of lactating mothers with different stages of lactating period

0.120

  < 25

26 (29.2)

27 (31.0)

18 (20.2)

26 (28.9)

34 (38.6)

 25–30

42 (47.2)

38 (43.7)

44 (49.4)

50 (55.6)

39 (44.3)

  > 30

21 (23.6)

22 (25.3)

27 (30.3)

14 (15.6)

15 (17.0)

0.729

 Male

50 (56.2)

46 (52.9)

47 (52.8)

54 (60.0)

42 (47.7)

 Female

39 (43.8)

37 (42.5)

39 (43.8)

36 (40.0)

43 (48.9)

Education ¹

<0.001 ^*

 Middle school or blow

11 (12.4) ^a

15 (17.2) ^{a, b}

26 (29.2) ^b

22 (24.4) ^{a, b}

38 (43.2) ^c

 High school

31 (39.1)

34 (39.1)

21 (23.6)

25 (27.8)

23 (26.1)

 College or above

45 (42.5)

37 (42.5)

42 (47.2)

41 (45.6)

26 (29.5)

0.165

  < 2000

20 (22.5)

17 (19.5)

23 (25.8)

26 (28.9)

31 (35.2)

 2000–4000

36 (40.4)

43 (49.4)

41 (46.1)

40 (44.4)

39 (44.3)

  > 4000

30 (33.7)

21 (24.1)

23 (25.8)

22 (24.4)

18 (20.5)

 Unclear

3 (3.4)

6 (6.9)

2 (2.2)

2 (2.2)

0 (0.0)

0.038 ^*

 Vaginal

50 (56.2) ^{a, b}

45 (51.7) ^a

37 (41.6) ^b

55 (61.1) ^a

54 (61.4) ^a

 Cesarean

37 (41.6)

42 (48.3)

52 (58.4)

35 (38.9)

33 (37.5)

0.109

 Underweight

5 (5.6)

2 (2.3)

2 (2.2)

4 (4.4)

7 (8.0)

 Normal

54 (60.7)

58 (66.7)

56 (62.9)

69 (76.7)

64 (72.7)

 Overweight

26 (29.2)

26 (29.9)

26 (29.2)

16 (17.8)

16 (18.2)

 Obesity

3 (3.4)

1 (1.1)

5 (5.6)

1 (1.1)

1 (1.1)

0.810

 Yes

10 (11.2)

12 (13.8)

11 (12.4)

8 (8.9)

8 (9.1)

 No

79 (88.8)

75 (86.2)

78 (87.6)

82 (91.1)

80 (90.9)

Pregnancy duration, weeks ²

39 (39, 40)

39 (39, 40)

39 (38, 40)

39.5 (39, 40)

40 (39, 40)

0.268