Table 1 Descriptive characteristics of live births in California, 1989–2007

Cesarean Delivery

2,575,801

24.40

Singleton

10,280,994

97.40

Male infant

5,400,155

51.16

Preterm (<37 completed weeks)

958,280

9.08

Maternal Age

  < 18 years

424,614

4.02

  18-25 years

3,820,752

36.20

  26-34 years

4,781,611

45.31

  ≥ 35 years

1,526,339

14.46

Maternal Race/Ethnicity

  Non-hispanic white

3,616,819

34.27

  Non-hispanic black

705,735

6.69

  Hispanic

4,958,368

46.98

  Asian/Pacific Islander

1,147,139

10.87

  Other

126,923

1.20