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Commonwealth v. ClancyInvestigation Archive • 2026
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Source: Plymouth Superior Court filing • Public record

The Global Prevalence of Postpartum Psychosis: A Systematic Review

VanderKruik, R., Bariktschung, K., Keating, C., & Cohen, L.S. (2017). The global prevalence of postpartum psychosis: a systematic review. *BMC Psychiatry*, 17, 272. https://doi.org/10.1186/s12888-017-1427-7

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The Global Prevalence of Postpartum Psychosis: A Systematic Review

Citation

VanderKruik, R., Bariktschung, K., Keating, C., & Cohen, L.S. (2017). The global prevalence of postpartum psychosis: a systematic review. BMC Psychiatry, 17, 272. https://doi.org/10.1186/s12888-017-1427-7

Published

July 28, 2017

Journal

BMC Psychiatry (Springer Nature)

Objective

To determine the global prevalence of postpartum psychosis (puerperal psychosis) using systematic review methodology.

Methods

Systematic review of studies reporting prevalence of postpartum psychosis from across the globe.

Key Findings

  • Relatively low rate of puerperal psychosis globally
  • Given the potential for serious consequences, this morbidity is significant from a global public health perspective
  • Further attention to consistent detection of puerperal psychosis can help provide appropriate treatment to prevent harmful consequences for both mother and baby
  • Clinical Significance

  • Postpartum psychosis is a rare but serious psychiatric condition
  • Early detection and intervention are critical
  • Can have devastating consequences if untreated (including infanticide and suicide)
  • Requires immediate medical attention
  • Relevance to Clancy Case

    This systematic review establishes the epidemiological context for postpartum psychosis, confirming its relative rarity but emphasizing the severity of consequences when it occurs. The low prevalence rate (approximately 1-2 per 1000 deliveries) makes it a challenging condition to screen for systematically, yet the potential outcomes underscore the importance of clinical vigilance.