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Table 1 Characteristics of the study population by body mass index

From: Are overweight and obesity associated with increased risk of cesarean delivery in Mexico? A cross-sectional study from the National Survey of Health and Nutrition

Ā 

Body mass index

Ā 

Normal

Overweight

Obesity

Total

Ā 

n (%) sample

1,463 (32.01)

1,731 (37.88)

1,376 (30.01)

4,570 (100)

n (%) survey weights

2,452,531 (33.8)

2,649,025 (36.4)

2,175,985 (29.8)

7,277,541 (100)

Ā 

% [CI]

P-value

Age at delivery (years)

ā€ƒ12ā€“19

0.27

[0.24,0.31]

0.13

[0.11,0.15]

0.10

[0.08,0.12]

0.17

[0.15,0.18]

pā€‰=ā€‰0.001

ā€ƒ20ā€“24

0.31

[0.28,0.36]

0.28

[0.24,0.32]

0.25

[0.21,0.29]

0.28

[0.26,0.30]

ā€ƒ25ā€“29

0.24

[0.21,0.28]

0.26

[0.22,0.29]

0.26

[0.23,0.30]

0.25

[0.24,0.27]

ā€ƒ30ā€“34

0.12

[0.10,0.15]

0.22

[0.19,0.25]

0.26

[0.22,0.29]

0.20

[0.18,0.22]

ā€ƒ35ā€“39

0.04

[0.03,0.05]

0.10

[0.08,0.12]

0.12

[0.09,0.15]

0.08

[0.07,0.09]

ā€ƒ40ā€“44

0.01

[0.01,0.02]

0.02

[0.01,0.03]

0.02

[0.01,0.03]

0.02

[0.01,0.02]

ā€ƒ45ā€“49

0.00

[0.00,0.00]

0.00

[0.00,0.01]

0.00

[0.00,0.01]

0.00

[0.00,0.00]

Educational level

ā€ƒPrimary or less

0.22

[0.19,0.25]

0.27

[0.24,0.31]

0.30

[0.26,0.33]

0.26

[0.24,0.28]

pā€‰=ā€‰0.019

ā€ƒHigh school

0.41

[0.37,0.45]

0.39

[0.36,0.43]

0.40

[0.36,0.44]

0.40

[0.38,0.42]

ā€ƒGreater than high school

0.37

[0.33,0.41]

0.34

[0.30,0.37]

0.30

[0.26,0.35]

0.34

[0.31,0.36]

Socioeconomic status

ā€ƒI (lower)

0.35

[0.31,0.39]

0.33

[0.30,0.37]

0.35

[0.32,0.39]

0.35

[0.32,0.37]

pā€‰=ā€‰0.145

ā€ƒII

0.22

[0.18,0.25]

0.24

[0.21,0.27]

0.20

[0.17,0.23]

0.22

[0.20,0.24]

ā€ƒIII

0.17

[0.14,0.20]

0.21

[0.18,0.24]

0.16

[0.14,0.20]

0.18

[0.16,0.20]

ā€ƒIV

0.16

[0.13,0.20]

0.14

[0.12,0.17]

0.18

[0.15,0.22]

0.16

[0.14,0.18]

ā€ƒV

0.10

[0.08,0.13]

0.08

[0.06,0.10]

0.10

[0.07,0.14]

0.09

[0.08,0.11]

Indigenous ethnicity

0.06

[0.04,0.07]

0.08

[0.06,0.10]

0.04

[0.03,0.06]

0.06

[0.05,0.07]

pā€‰=ā€‰0.007

Region

ā€ƒNorth

0.21

[0.19,0.24]

0.19

[0.17,0.22]

0.23

[0.20,0.26]

0.21

[0.20,0.22]

pā€‰=ā€‰0.314

ā€ƒCentral

0.35

[0.31,0.40]

0.33

[0.29,0.36]

0.31

[0.27,0.36]

0.33

[0.31,0.35]

ā€ƒCentral-western

0.22

[0.19,0.25]

0.22

[0.19,0.24]

0.21

[0.18,0.24]

0.22

[0.20,0.23]

ā€ƒSouth-southeast

0.22

[0.19,0.25]

0.26

[0.24,0.29]

0.25

[0.22,0.28]

0.24

[0.23,0.26]

Parity

ā€ƒNulliparous

0.36

[0.32,0.40]

0.24

[0.21,0.27]

0.20

[0.16,0.24]

0.27

[0.25,0.29]

pā€‰=ā€‰0.001

ā€ƒMultiparous

0.64

[0.60,0.68]

0.76

[0.73,0.79]

0.80

[0.76,0.84]

0.73

[0.71,0.75]

Initiation of prenatal care

ā€ƒEarly

0.81

[0.78,0.84]

0.86

[0.83,0.88]

0.85

[0.81,0.87]

0.84

[0.82,0.85]

pā€‰=ā€‰0.069

ā€ƒLate

0.19

[0.16,0.22]

0.14

[0.12,0.17]

0.15

[0.13,0.19]

0.16

[0.15,0.18]

Antenatal consultations

ā€ƒFive or more

0.86

[0.83,0.88]

0.89

[0.87,0.91]

0.91

[0.88,0.93]

0.89

[0.87,0.90]

pā€‰=ā€‰0.010

ā€ƒLess than five

0.14

[0.12,0.17]

0.11

[0.09,0.13]

0.09

[0.07,0.12]

0.11

[0.10,0.13]

Diabetes Mellitus

0.01

[0.00,0.01]

0.02

[0.01,0.04]

0.03

[0.02,0.04]

0.02

[0.01,0.02]

pā€‰=ā€‰0.013

Hypertension

0.06

[0.05,0.09]

0.07

[0.05,0.09]

0.13

[0.10,0.16]

0.08

[0.07,0.10]

pā€‰=ā€‰0.001

Complications during pregnancy

0.61

[0.57,0.64]

0.58

[0.54,0.62]

0.61

[0.57,0.65]

0.60

[0.58,0.62]

pā€‰=ā€‰0.442

Complications at delivery

0.20

[0.17,0.23]

0.21

[0.18,0.25]

0.24

[0.20,0.27]

0.21

[0.20,0.23]

pā€‰=ā€‰0.300

Place of delivery

ā€ƒSocial security

0.29

[0.25,0.33]

0.31

[0.28,0.35]

0.30

[0.26,0.34]

0.30

[0.28,0.32]

pā€‰=ā€‰0.659

ā€ƒPublic service facilities

0.47

[0.42,0.51]

0.46

[0.42,0.49]

0.48

[0.44,0.53]

0.47

[0.44,0.49]

ā€ƒPrivate facilities

0.25

[0.21,0.29]

0.23

[0.20,0.26]

0.22

[0.18,0.26]

0.23

[0.21,0.26]

Health insurance

ā€ƒSocial security

0.27

[0.23,0.31]

0.31

[0.28,0.34]

0.29

[0.26,0.33]

0.29

[0.27,0.31]

pā€‰=ā€‰0.478

ā€ƒPublic service

0.50

[0.46,0.55]

0.50

[0.46,0.54]

0.50

[0.46,0.54]

0.50

[0.48,0.53]

ā€ƒNo coverage

0.23

[0.19,0.27]

0.19

[0.16,0.23]

0.21

[0.17,0.25]

0.21

[0.19,0.23]

  1. All proportions include survey weights