Key result
Pregnancy was associated with a higher rate of hospitalization due to respiratory illnesses compared to non-pregnancy periods during influenza seasons (RR 4.30; 95% CI 1.96-9.41).
Why the study?
Does pregnancy increase the risk of hospitalization due to respiratory illnesses during influenza seasons compared to non-pregnancy periods?
Population
12,838 pregnant women who visited collaborating maternity hospitals and clinics in Osaka Prefecture, Japan…
Comparison
Pregnancy period vs Non-pregnancy period within the same subjects
Design
Cohort
Follow-up
4 influenza seasons (2010/11 to 2013/14)
Authors
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Pregnant women show elevated respiratory hospitalization risk during influenza season; leaves open optimal prevention strategies pending confirmatory trials.
Observational (n=12,838)
Yes
Does pregnancy increase the risk of hospitalization due to respiratory illnesses during influenza seasons compared to non-pregnancy periods?
Relative Risk: 4.3 (95% CI 1.96–9.41)
Absolute Event Rate: 2.54% vs 1.08%
Pregnant women have a significantly higher risk of hospitalization due to respiratory illnesses during influenza seasons compared to their own non-pregnancy periods.
Ohfuji et al. (2017) conducted an observational in Influenza disease burden / respiratory illnesses (n=12,838). Pregnancy vs. Non-pregnancy period (within the same subject) was evaluated on Hospitalization due to respiratory illnesses (RR 4.30, 95% CI 1.96-9.41). Pregnancy was associated with a higher rate of hospitalization due to respiratory illnesses compared to non-pregnancy periods during influenza seasons (RR 4.30; 95% CI 1.96-9.41).
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