Psychotic Illness in First-Time Mothers with No Previous Psychiatric Hospitalizations: A Population-Based Study
2009

Post-Partum Psychosis Risk in First-Time Mothers

Sample size: 745596 publication Evidence: moderate

Author Information

Author(s): Unnur Valdimarsdóttir, CM Hultman, B Harlow, S Cnattingius, P Sparén

Hypothesis

What are the independent risk factors for post-partum psychosis in first-time mothers?

Conclusion

The study found that first-time mothers without previous psychiatric hospitalizations have a significantly increased risk of psychosis in the early post-partum period.

Supporting Evidence

  • 892 women were hospitalized due to psychoses in the first 90 days post-partum.
  • Incidence rates for psychosis peaked in the first month after birth.
  • Higher maternal age was associated with increased risk of psychosis.
  • Higher infant birth weight and maternal diabetes appeared protective.

Takeaway

This study shows that new moms who have never been in a mental hospital are more likely to get really sick after having a baby, especially in the first month.

Methodology

The researchers used a national case register of hospital discharges over a 17-year period in Sweden to analyze the incidence of psychotic illness.

Limitations

The study lacks data on women with post-partum psychosis who are not hospitalized, and it is observational, which limits definitive conclusions.

Participant Demographics

First-time mothers in Sweden.

Digital Object Identifier (DOI)

10.1371/journal.pmed.1000013

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