Skip to main content

Table 2 Obstetric characteristics of the women according to their BMI

From: Relationship between maternal body mass index with the onset of breastfeeding and its associated problems: an online survey

Variable

BMI

  
 

Normoweight

n (%)

Overweight

n (%)

Obesity type I

n (%)

Obesity type II

n (%)

Obesity type III

n (%)

Total values

n (%)

P - value*

Number of pregnancies

      

0.006

 One

860 (53.5)

1456 (53.5)

611 (53.0)

149 (50.9)

50 (52.1)

3126 (56.1)

χ2 = 7.4

 Two

562 (35.0)

910 (33.4)

356 (30.9)

99 (33.8)

31 (32.3)

1658 (29.7)

df = 1

 Three

137 (8.5)

232 (8.5)

120 (10.4)

33 (11.3)

11 (11.5)

533 (9.5)

 

 Four

36 (2.2)

84 (3.1)

39 (3.4)

8 (2.7)

2 (2.1)

169 (3)

 

 Five or more

12 (0.7)

40 (1.5)

27 (2.3)

4 (1.4)

2 (2.1)

85 (1.5)

 

Number of deliveries

      

<  0.001

 None

259 (16.1)

595 (21.9)

311 (27.0)

98 (33.4)

33 (34.4)

1296 (22.1)

χ2 = 40.0

 One

869 (54.1)

1391 (51.1)

542 (47.0)

132 (45.1)

40 (41.7)

2974 (50.7)

df = 1

 Two

422 (26.3)

645 (23.7)

261 (22.6)

50 (17.1)

20 (20.8)

1398 (23.8)

 

 Three

48 (3.0)

80 (2.9)

33 (2.9)

10 (3.4)

3 (3.1)

164 (2.8)

 

 Four

9 (0.6)

10 (0.4)

4 (0.3)

1 (0.3)

0 (0.0)

24 (0.4)

 

 Five or more

0 (0.0)

1 (0.0)

2 (0.2)

2 (0.7)

0 (0.0)

5 (0.0)

 

Twin pregnancy

      

0.004

 No

1583 (98.5)

2652 (97.4)

1118 (97.0)

284 (96.9)

92 (95.8)

5729 (97.6)

χ2 = 8.5

 Yes

24 (1.5)

70 (2.6)

35 (3.0)

9 (3.1)

4 (4.2)

142 (2.4)

df = 1

Prematurity

      

0.03

  > 37

1472 (91.6)

2557 (93.9)

1065 (92.4)

278 (94.9)

93 (96.9)

5465 (93.1)

χ2 = 4.5

  < 37

135 (8.4)

165 (6.1)

88 (7.6)

15 (5.1)

3 (3.1)

406 (6.9)

df = 1

Hypertensive states

      

<  0.001

 No

1550 (96.5)

2568 (94.3)

1032 (89.5)

239 (81.6)

77 (80.2)

5466 (93.1)

χ2 = 130.7

 Yes

57 (3.5)

154 (5.7)

121 (10.5)

54 (18.4)

19 (19.8)

405 (6.9)

df = 1

Gestational diabetes-diet

      

<  0.001

 No

1429 (88.9)

2463 (90.5)

988 (85.7)

223 (76.1)

75 (78.1)

5178 (88.2)

χ2 = 39.7

 Yes

178 (11.1)

259 (9.5)

165 (14.3)

70 (23.9)

21 (21.9)

693 (11.8)

df = 1

Gestational diabetes-insulin

      

<  0.001

 No

1575 (98.0)

2660 (97.7)

1124 (97.5)

275 (93.9)

89 (92.7)

5723 (97.5)

χ2 = 16.1

 Yes

32 (2.0)

62 (2.3)

29 (2.5)

18 (6.1)

7 (7.3)

148 (2.5)

df = 1

Hyperthyroidism

      

0.34

 No

1528 (95.1)

2601 (95.6)

1100 (95.4)

272 (92.8)

90 (93.8)

5591 (95.2)

χ2 = 0.9

 Yes

79 (4.9)

121 (4.4)

53 (4.6)

21 (7.2)

6 (6.3)

280 (4.7)

df = 1

Hypothyroidism

      

0.43

 No

1398 (87.0)

2375 (87.3)

984 (85.3)

251 (85.7)

86 (89.6)

5094 (86.7)

χ2 = 0.6

 Yes

209 (13.0)

347 (12.7)

169 (14.7)

42 (14.3)

10 (10.4)

777 (13.3)

df = 1

Anaemia

      

0.03

 No

967 (60.2)

1605 (59.0)

732 (63.5)

186 (63.5)

63 (65.6)

3553 (60.5)

χ2 = 4.5

 Yes

640 (39.8)

1117 (41.0)

421 (36.5)

107 (36.5)

33 (34.4)

2318 (39.5)

df = 1

       

0.50

 No

1584 (98.6)

2691 (98.9)

1137 (98.6)

291 (99.3)

95 (99.0)

5798 (98.7)

χ2 = 0.5

 Yes

23 (1.4)

31 (1.1)

16 (1.4)

2 (0.7)

1 (1.0)

73 (1.3)

df = 1

Risk of preterm birth

      

0.003

 No

1433 (89.2)

2529 (92.9)

1062 (92.1)

276 (94.2)

87 (90.6)

5387 (91.7)

χ2 = 8.9

 Yes

174 (10.8)

193 (7.1)

91 (7.9)

17 (5.8)

9 (9.4)

484 (8.2)

df = 1

Deep vein thrombosis

      

0.75

 No

1580 (98.3)

2695 (99.0)

1138 (98.7)

289 (98.6)

92 (95.8)

5794 (98.6)

χ2 = 0.1

 Yes

27 (1.7)

27 (1.0)

15 (1.3)

4 (1.4)

4 (4.2)

77 (1.3)

df = 1

Oligohydramnios

      

0.07

 No

1561 (97.1)

2618 (96.2)

1092 (94.7)

285 (97.3)

93 (96.9)

5649 (96.2)

χ2 = 3.3

 Yes

46 (2.9)

104 (3.8)

61 (5.3)

8 (2.7)

3 (3.1)

222 (3.8)

df = 1

Polyhydramnios

      

0.001

 No

1502 (93.5)

2480 (91.1)

1037 (89.9)

259 (88.4)

82 (85.4)

5360 (91.3)

χ2 = 18.8

 Yes

105 (6.5)

242 (8.9)

116 (10.1)

34 (11.6)

14 (14.6)

511 (8.7)

df = 1

Composite pregnancy morbidity

      

0.02

 No

621 (38.6)

1051 (38.6)

419 (36.3)

93 (31.7)

31 (32.3)

2215 (37.7)

χ2 = 5.9

 Yes

986 (61.4)

1671 (61.4)

734 (63.7)

200 (68.3)

65 (67.7)

3656 (62.3)

df = 1

  1. *Pearson’s χ2 test. df: degrees of freedom. Statistical significance at p ≤ 0.05