pcb Håberg 2013.

Methods	Cohort study assessing the risk of neonatal death following exposure to pandemic monovalent H1N1 influenza vaccine or influenza virus during pregnancy
Participants	A total of 113,331 pregnant women
Interventions	Immunisation with pandemic monovalent H1N1 adjuvanted influenza vaccine Pandemrix (GSK) or Celvapan (not adjuvanted)
Outcomes	Foetal death
Notes	Government funded
Risk of bias
Bias	Authors' judgement	Support for judgement
PCS/RCS ‐ selection exposed cohort All outcomes	Unclear risk	Data link
PCS/RCS ‐ selection non‐exposed cohort All outcomes	Unclear risk	Data link
PCS/RCS ‐ comparability All outcomes	Unclear risk	Multivariate model
PCS/RCS ‐ assessment of outcome All outcomes	Unclear risk	Data link
Summary assessment	Unclear risk	Unclear risk of bias