Table 1 Demographic Distribution and Unplanned Primary Cesarean Birth among Women without a Prior Cesarean, California, 2016

ALL

14.0 (12.5, 15.7)

Mother’s Age

 <25

23.9

11.9 (9.2, 15.2)

 25–29

26.9

15.5 (12.5, 19.0)

 30–34

29.2

15.6 (12.7, 19.0)

 35+

20.0

14.2 (10.8, 18.5)

Mother’s Race/Ethnicity

 White

27.4

13.8 (10.9, 17.3)

 Black

4.4

25.5 (19.2, 33.0)

 Asian and Pacific Islander

16.0

12.8 (10.7, 15.1)

 Latina

48.8

16.7 (12.5, 22.0)

Insurance

 Medi-Cal

47.0

14.2 (12.0, 16.7)

 Private

48.3

14.1 (12.0, 16.7)

Parity

 1

47.4

23.7 (21.0, 26.6)

 2

28.8

4.5 (3.0, 6.8)

 3+

23.8

6.3 (4.3, 9.1)

Body Mass Index

 Underweight

16.1

13.2 (9.6, 17.9)

 Normal

44.0

13.8 (11.4, 16.6)

 Overweight

22.6

11.1 (8.3, 14.8)

 Obese

17.2

17.6 (13.6, 22.5)

Marital Status

 Married

59.3

13.9 (11.9, 16.2)

 Living with someone

27.0

12.4 (9.8, 15.7)

 Single

12.0

19.3 (14.7, 24.9)

Birthplace

 US

66.2

15.2 (13.2, 17.3)

 Other country

33.8

12.4 (9.9, 15.4)

Language at Home

 English only

58.4

15.2 (13.1, 17.4)

 Spanish only

15.5

9.6 (6.8, 13.5)

 Asian language

7.8

17.4 (11.4, 25.5)

Education

 High school or less

31.3

11.6 (9.2, 14.5)

 Some college

33.0

15.8 (13.1, 19.0)

 College

19.7

13.7 (10.4, 17.8)

 Some grad school or higher

16.1

16.7 (12.9, 21.4)