Short-term mortality after perforated or bleeding peptic ulcer among elderly patients: a population-based cohort study

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Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

1. 1Trends in Perforated Peptic Ulcer: Incidence, Etiology, Treatment, and PrognosisPrognostic Study · 2000 · 236 citations
2. 2Individual Nonsteroidal Antiinflammatory Drugs and Other Risk Factors for Upper Gastrointestinal Bleeding and PerforationCase-Control Study · 1997 · 227 citations
3. 3Diabetes and 30-Day Mortality From Peptic Ulcer Bleeding and PerforationRetrospective Study · 2006 · 88 citations
4. 4Acute Upper Gi Bleeding: Did Anything Change?Cohort Study · 2003 · 508 citations