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Predicting global pneumonia mortality trends by age group: A modeling study.

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Pneumonia mortality is projected to rise in older adults but decline in children by 2030. These global pneumonia trends highlight the need for age-specific public health strategies and interventions.

Keywords:
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Area of Science:

  • Public Health
  • Epidemiology
  • Biostatistics

Background:

  • Pneumonia remains a significant global health challenge, disproportionately affecting vulnerable populations across all age groups.
  • Understanding future pneumonia mortality trends is crucial for developing effective, targeted public health interventions.

Purpose of the Study:

  • To forecast global pneumonia mortality trends by specific age groups up to the year 2030.
  • To utilize diverse modeling techniques to predict future pneumonia mortality patterns and inform public health policy.

Main Methods:

  • A predictive modeling study using publicly available, secondary global data from 1990-2019.
  • Employed five distinct forecasting models: Auto-Regressive Integrated Moving Average (ARIMA), Generalized Additive Model (GAM), Simple Linear Regression (SLR), Facebook's Prophet, and the n-sub-epidemic framework.
  • Assessed percentage change in pneumonia deaths and forecasting uncertainty for each model between 2020 and 2030.

Main Results:

  • Projections indicate a sustained increase in pneumonia mortality for individuals aged ≥70 years (6.0%-35.4%) and a gradual increase for ages 50-69 (0.4%-19.9%).
  • A significant decline in pneumonia mortality is forecasted for children under 5 years (-33.2% to -97.3%) and those aged 5-14 years (-22.7% to -45.9%).
  • Discrepancies observed in mortality trends for ages 15-49, with n-sub-epidemic models predicting a decrease (-9.1% to -11.6%) while statistical models suggested an increase (0.1% to 11.6%).

Conclusions:

  • Pneumonia mortality trends are expected to diverge significantly across different age demographics, underscoring the necessity for age-tailored public health policies.
  • The convergence of multiple robust forecasting models provides reliable insights into pneumonia mortality dynamics across most age groups.
  • Future research should incorporate region-specific data and retrospective model validation to enhance the accuracy of pneumonia mortality predictions.