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Table 3 Baseline features reported by the participants

From: One “misunderstood” health issue: demonstrating and communicating the safety of influenza a vaccination in pregnancy: a systematic review and meta-analysis

Studies

GDM (%)

Vac/UV

HBP (%)

Vac/UV

MP (%)

Vac/UV

FA suppl (%)

Vac/UV

Baum2015 [15]

    

Beau2014 [16]

3.10/3.80

0.90/1.20

2.10/2.50

27.4/18.5

Chambers2013 [17]

 

8.90/3.90

 

69.0/72.3

Chambers 2016[18]

 

8.10/5.50

 

72.1/63.8

Cleary2014 [19]

Fabiani2015 [20]

2.00/1.30

Fell2012 [21]

 

48.1/51.9

Kallen2012 [22]

1.06/1.84

0.42/0.74

Legge2014 [23]

4.80/4.98

1.02/1.11

Lin2012 [24]

Maas2015 [25]

Olsen2016 [26]

Pasternak2012 [27]

Richards2013 [28]

16.2/15.6

14.4/14.9

5.30/5.80

Rubinstein2013 [29]

4.10/3.60

Sheffield2012 [30]

12.0/6.00

9.00/9.00

2.00/1.00

Steinhoff2012 [31]

Steinhoff2017 [32]

Zerbo2017 [33]

2.10/1.87

  1. Abbreviations: GDM Gestational diabetes, HBP High blood pressure, MP Multiple pregnancy, FA suppl Folic acid supplement, Vac Vaccination, UV Unvaccinated