Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2016 Jun 6;124(1):48–59. doi: 10.1111/1471-0528.14143

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2016 World Health Organization; licensed by John Wiley & Sons Ltd on behalf of Royal College of Obstetricians and Gynaecologists.

This is an open access article distributed under the terms of the Creative Commons Attribution IGO License which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited.

PMC Copyright notice

Forest plot of individual study results for association between influenza illness during pregnancy and small‐for‐gestational‐age (SGA) birth. Small, black diamond markers indicate individual study point estimate, with corresponding 95% confidence intervals (CIs) represented by horizontal bars. ^aRisk of SGA birth per 100 women classified as having (exposed) or not having (unexposed) influenza illness/infection during pregnancy. ^b’’ indicates a Newcastle‐Ottawa Score ≥8, risk of diagnostic ascertainment bias not rated as ‘very high’, and exposure not measured using self‐reported questionnaire. ^cCrude estimates were used in place of adjusted estimates when the latter were not provided. ^dHansen (2012)40 is shown twice: one estimate for 2009 A (pH1N1) and one for 2008–2009 influenza season.

Inline graphic — Forest plot of individual study results for association between influenza illness during pregnancy and small‐for‐gestational‐age (SGA) birth. Small, black diamond markers indicate individual study point estimate, with corresponding 95% confidence intervals (CIs) represented by horizontal bars. ^aRisk of SGA birth per 100 women classified as having (exposed) or not having (unexposed) influenza illness/infection during pregnancy. ^b’’ indicates a Newcastle‐Ottawa Score ≥8, risk of diagnostic ascertainment bias not rated as ‘very high’, and exposure not measured using self‐reported questionnaire. ^cCrude estimates were used in place of adjusted estimates when the latter were not provided. ^dHansen (2012)40 is shown twice: one estimate for 2009 A (pH1N1) and one for 2008–2009 influenza season.