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Table 2 Univariate logistic regression analysis of variables associated with CS

From: Utilization of antenatal ultrasound scan and implications for caesarean section: a cross-sectional study in rural Eastern China

Variables

Crude OR

OR 95% CI

Pvalue

Maternal education level (years)*

1.060

1.032-1.088

< 0.001

Husband education level (years)*

1.069

1.031-1.109

< 0.001

Maternal age (24-31 y as control)

   

≤ 23 y

0.830

0.680-1.103

0.067

≥ 32 y

1.058

0.868-1.290

0.576

Family annual income (≤ 3000 yuan as control)

   

3001-7499 yuan

1.316

1.091-1.586

0.004

≥ 7500 yuan

1.388

1.092-1.763

0.007

Antenatal care#

   

No

-

-

-

Yes

1.356

1.142-1.611

0.001

Antenatal ultrasound scans (frequencies)*&

1.342

1.265-1.423

< 0.001

Pregnancy complications

   

No

-

-

-

Yes

1.601

1.308-1.961

< 0.001

Previous adverse pregnant outcomes

   

No

-

-

-

Yes

1.726

1.232-2.417

0.001

Primiparity

   

No

-

-

-

Yes

1.241

1.042-1.479

0.016

Preterm deliveries

   

No

-

-

-

Yes

0.865

0.615-1.218

0.407

Large for date infants

   

No

-

-

-

Yes

0.875

0.663-1.154

0.343

  1. * continuous variables
  2. # Antenatal care refers to antenatal check-up during the 1st trimester of pregnancy plus 4 times during 2nd and 3 rd trimesters, ie, at least 5 antenatal visits during pregnancy
  3. &Antenatal ultrasound scans means the frequencies that women had ultrasound scans during the index pregnancy