Table 2 Associated factors for maternal influenza vaccination among pregnant or postpartum women

Ever received information about influenza vaccination

No

1

1

Yes

8.51

4.01–18.08

 < 0.001

8.9^c

4.17–19.01

 < 0.001

Source of information

No

1

1

Non-OBGYN^d doctors, public health care, media, friends, and family

4.37

2.02–9.44

 < 0.001

4.38^c

2.01–9.55

 < 0.001

OBGYN doctor

11.45

5.49–23.87

 < 0.001

11.44^c

5.46–24.00

 < 0.001

Pregnancy period

1^st trimester

1

1

2^nd or 3^rd trimester or postpartum

2.76

1.45–5.25

0.002

2.41^e

1.21–4.82

0.013

Influenza vaccination in previous pregnancy

No

1

Yes

1.25

0.80–1.96

0.321