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Table 2 Sociodemographic determinants of CS birth (n = 3148)

From: Socio-demographic factors of cesarean births in Nha Trang city, Vietnam: a community-based survey

 

Number of births N (%)

Cesarean section rate (%)

Model 1

Model 2

Crude OR1

95% CI2 for OR

Adjusted OR1

95% CI2 for OR1

Demographic information of mothers

 Age group of mother

   < 20 years of age

70

(2.2)

22.9

0.57

(0.34, 1.03)

0.6

(0.33, 1.11)

  20-24 years of age

508

(16.1)

34.1

1

 

1

 

  25-29 years of age

1095

(34.7)

39.8

1.28

(1.46, 2.29)

1.19

(0.94, 1.49)

  30-34 years of age

958

(30.4)

48.6

1.83

(1.46, 2.29)

1.82

(1.43, 2.31)

   ≥ 35 years of age

517

(16.4)

59.0

2.78

(2.16, 3.60)

2.9

(2.22, 3.79)

 Educational background of mother

  Unfinished primary

167

(5.3)

40.1

1.04

(0.71,1.50)

1.01

(0.68, 1.21)

  Primary

396

(12.5)

39.1

1

 

1

 

  Lower secondary

584

(18.5)

39.2

1.00

(0.77, 1.30)

1.03

(0.84, 1.38)

  Upper secondary

794

(25.2)

43.3

1.88

(0.92, 1.51)

1.16

(0.90, 1.51)

  Post-secondary or higher

1207

(38.3)

49.8

1.54

(1.22, 1.94)

1.35

(0.81, 1.37)

 Mother who does not have another child going to kindergarten or school

1238

(39.3)

 

1

 

1

 

 Mother who has another child going to kindergarten or school

1910

(60.6)

42.8

0.85

(0.74, 0.98)

0.73

(0.62, 0.86)

Family and residential information

 Residential area

  Suburban area

958

(30.4)

40.3

1

 

1

 

  Urban area

2190

(69.5)

46.1

1.26

(1.08, 1.47)

0.89

(0.76, 1.05)

 Monthly income3

  < 342 USD (< 8 million VND)

974

(30.9)

41.2

1

 

1

 

  343-428USD (8-9 million VND)

820

(26.0)

44.4

1.14

(0.94, 1.37)

1.08

(0.88, 1.31)

  429-643USD (10-14 million VND)

647

(20.5)

42.8

1.06

(0.87, 1.30)

1.09

(0.87, 1.35)

  ≥ 644 USD (≥ 15 million VND)

707

(22.4)

50.1

1.43

(1.17, 1.74)

1.43

(1.14, 1.80)

 Educational background of head of household

  Unfinished primary

477

(15.1)

37.7

0.92

(0.72, 1.17)

  

  Primary

671

(21.3)

39.6

1

   

  Lower secondary

529

(16.8)

43.9

1.18

(0.94, 1.49)

  

  Upper secondary

698

(22.1)

46.6

1.32

(1.07, 1.64)

  

  Post-secondary or higher

773

(24.5)

50.8

1.57

(1.27, 1.94)

  

 Household size (no. of household members)

  < 5

1122

(35.6)

48.5

1

 

1

 

  5-9

1851

(58.8)

41.9

0.76

(0.66, 0.89)

0.82

(0.71, 0.97)

  ≥ 10

175

(5.5)

43.4

0.81

(0.59, 1.94)

0.85

(0.60, 1.23)

Birth outcome

 Gestational weeks

  < 37 weeks 0 day

173

(5.5)

45.7

1.08

(0.79, 1.47)

1.03

(0.73, 1.46)

  37 weeks 0 day-41w 6 days

2890

(91.8)

43.6

1

 

1

 

  ≥ 42 weeks 0 day

85

(2.7)

65.9

2.49

(1.58, 3.92)

2.62

(1.63, 4.21)

 Birth weight of child

  < 2500 g

69

(2.1)

55.1

1.99

(1.19, 3.32)

1.87

(1.09, 3.26)

  2500-2999 g

457

(14.5)

38.1

1

 

1

 

  3000-3499 g

1506

(47.8)

40.

1.08

(0.87, 1.34)

1

(0.79, 1.25)

  3500-3999 g

910

(28.9)

49.8

1.61

(1.28, 2.02)

1.5

(1.18, 1.91)

  4000-4499 g

180

(5.7)

59.4

2.38

(1.67, 3.39)

2.04

(1.42, 2.95)

  ≥ 4500 g

26

(0.8)

80.8

6.83

(2.52, 18.44)

5.57

(2.02, 15.34)

 Day of the week at birth

  Monday

476

(15.1)

48.3

1

   

  Tuesday

480

(15.2)

45.0

0.87

(0.67, 1.12)

  

  Wednesday

442

(14.0)

46.2

0.91

(0.70, 1.18)

  

  Thursday

451

(14.3)

46.3

0.92

(0.71, 1.19)

  

  Friday

461

(14.6)

42.7

0.79

(0.61, 1.03)

  

  Saturday

413

(13.1)

41.9

0.77

(0.59, 1.00)

  

  Sunday

425

(13.5)

39.3

0.69

(0.53, 0.90)

  

 Child’s sex

  Male

1660

(52.7)

44.5

1

   

  Female

1448

(47.2)

45.4

0.99

(0.86, 1.14)

  
  1. Table 2 shows number of birth (percentage) and cesarean section rate in socio-demographic, obstetric, and institutional variables. Model 1 displays the results of crude odds ratio (Crude OR) and confidential interval (CI) of the socio-demographic, obstetric, and institutional variables for cesarean section rate. Model 2 displays the results of adjusted OR (AOR) and CI of significant variables in model 1 for cesarean section rate
  2. 1OR odds ratio, bold number, statistical significant
  3. 2Confidence interval
  4. 31USD = 23,291 VND (17th Sep. 2019), each category was divided by four quantiles (25, 50, and 25 percentiles)