Skip to main content

Table 2 Associations of maternal and neonatal factors with cesarean delivery among primipara with singleton pregnancies

From: Trends in cesarean delivery rates in primipara and the associated factors

Variables

Unadjusted OR (95% CI)

Adjusted OR (95% CI)

Maternal

Age (years)

 < 20

0.7 (0.6, 1.0)

0.8 (0.5, 1.2)

 2024

Ref

Ref

 2529

1.2 (1.2, 1.3)

1.2 (1.1, 1.3)

 3034

1.7 (1.6, 1.7)

1.5 (1.4, 1.6)

 > 34

2.6 (2.4, 2.7)

1.9 (1.7, 2.2)

Gravidity

 1

Ref

Ref

 2–3

1.1 (1.1, 1.2)

1.1 (1.0, 1.1)

 > 3

1.2 (1.1, 1.3)

1.2 (1.1, 1.4)

Year

 19951999

Ref

Ref

 20002004

1.5 (1.4, 1.6)

1.4 (1.2, 1.6)

 20052009

1.9 (1.8, 2.0)

1.3 (1.1, 1.6)

 20102014

1.6 (1.5, 1.7)

1.3 (1.0, 1.6)

 20152019

1.3 (1.3, 1.4)

1.1 (0.9, 1.4)

Season

 Spring

Ref

Ref

 Summer

1.0 (0.9, 1.0)

1.0 (0.9, 1.1)

 Autumn

1.0 (0.9, 1.0)

1.0 (0.9, 1.0)

 Winter

1.0 (0.9, 1.0)

1.0 (0.9, 1.0)

Neonatal

Sex

 Male

1.0 (1.0, 1.1)

1.0 (1.0, 1.1)

 Female

Ref

Ref

Weight (g)

 < 1500

1.0 (0.9, 1.3)

0.9 (0.6, 1.3)

 15002499

1.4 (1.3, 1.4)

1.2 (1.0, 1.3)

 25003999

Ref

Ref

 40004499

1.9 (1.8, 2.0)

1.6 (1.5, 1.8)

 > 4499

1.9 (1.8, 2.1)

2.3 (1.7, 3.2)

  1. Adjusted for gestational age, complications, fetal position, and GDP per capita at childbirth year; Bold values represent statistical significance (two-sided p < 0.05)