Shared Physiologic Pathways Among Comorbidities for Adults With Cerebral Palsy

Area of Science:

• Gerontology and Public Health
• Neurology and Clinical Medicine

Background:

• Aging with cerebral palsy (CP) is linked to declining health across multiple systems.
• Understanding shared pathophysiology of comorbidities in adults with CP is vital for improving aging outcomes.
• Defining multimorbidity patterns is a key step toward better clinical assessment and interventions.

Purpose of the Study:

• To identify common comorbidity combinations in adults with cerebral palsy.
• To determine the association between these comorbidity combinations and mortality.
• To inform clinical guidelines for healthful aging in the CP population.

Main Methods:

• Utilized a 20% sample of the Medicare fee-for-service database (2016-2018).
• Included adults (≥18 years) with cerebral palsy and 25 neurological/non-neurological comorbidities.
• Employed Principal Component (PC) analysis for comorbidity grouping and Cox regression for mortality analysis.

Main Results:

• Identified key comorbidity clusters: cardiorespiratory/dysphagia/fluid disorders, metabolic disorders, neurologic disorders, gastrointestinal issues, and orthopedic disorders.
• Among 16,728 adults with CP, 8.9% died within 2 years.
• Most comorbidity combinations (PCs) were associated with increased mortality risk, particularly the cardiorespiratory cluster (5th quintile HR=3.91).

Conclusions:

• This study identified prevalent and often fatal comorbidity combinations in adults with cerebral palsy.
• Findings suggest shared pathophysiology or characteristics underlying multimorbidity in this population.
• Results can inform targeted interventions and clinical guidelines for healthful aging in adults with CP.