Birth outcomes for Australian mother-infant pairs who received an influenza vaccine during pregnancy 2012-2014: The FluMum study (Letter)

No Thumbnail Available
File version
Author(s)
McHugh, Lisa
Andrews, Ross M
Ware, Robert S
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2017
Size
File type(s)
Location
License
Abstract

We thank Drs. Hutcheon and Ortiz for their comments on the potential for immortal time bias arising through the classification of immunization status in our analyses [1], [2]. Specifically, that we classified exposure as a categorical variable (ever vaccinated versus never vaccinated in pregnancy) rather than as a time varying co-variate. We agree that a woman vaccinated in pregnancy contributes both unvaccinated time (the period of pregnancy commencing from a specified gestational age up until the vaccine was received) and vaccinated time (the period of pregnancy commencing from a specified time point post vaccination through until birth or other defined time point). We accept that the potential for immortal time bias should have been included amongst the limitations that we outlined in our paper.

Journal Title

Vaccine

Conference Title
Book Title
Edition
Volume

35

Issue

35

Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Biological sciences

Agricultural, veterinary and food sciences

Biomedical and clinical sciences

Science & Technology

Life Sciences & Biomedicine

Immunology

Medicine, Research & Experimental

Research & Experimental Medicine

Persistent link to this record
Citation

McHugh, L; Andrews, RM; Ware, RS, Birth outcomes for Australian mother-infant pairs who received an influenza vaccine during pregnancy 2012-2014: The FluMum study (Letter), Vaccine, 2017, 35 (35), pp. 4492-4493

Collections