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Geographical distribution of congenital heart defects in Saudi Arabia

W Greer1, A L Sandridge, M Al-Menieir

  • 1Biostatistics, Epidemiology and Scientific Computing Department, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia. greer@kfshrc.edu.sa

Annals of Saudi Medicine
|April 13, 2005
PubMed

Insights

Geographical patterns of congenital heart defects (CHD) in Saudi Arabia reveal higher burdens in southwestern and northeastern regions. This study highlights the importance of town-level data for understanding CHD distribution and potential risk factors.

Area of Science:

  • Cardiology
  • Pediatrics
  • Public Health

Background:

  • Congenital heart defects (CHD) are diverse abnormalities arising during fetal development.
  • The precise causes of most CHDs remain unknown, necessitating research into potential environmental or geographical risk factors.
  • Understanding geographical distribution can offer insights into etiological factors for CHD.

Purpose of the Study:

  • To investigate the geographical distribution of congenital heart defects (CHD) in Saudi Arabia.
  • To identify specific regions within Saudi Arabia that exhibit a higher prevalence of CHD.
  • To assess the utility of different geographical scales (province vs. city) for epidemiological analysis of CHD.

Main Methods:

  • Utilized a dataset of 5,865 Saudi Arabian nationals diagnosed with CHD.
  • Cross-referenced patient residential data with a geographical information system (GIS) for spatial analysis.
  • Employed population data from the 1413H census for proportional distribution analysis.

Main Results:

  • Province-level mapping was found to be misleading due to regional size and inhomogeneity.
  • City-based geographical maps provided a more accurate representation of CHD distribution.
  • Identified higher concentrations of CHD cases in southwestern provinces near the Yemen border and the northeastern Eastern Province.

Conclusions:

  • Epidemiological studies of disease patterns in Saudi Arabia are most effective when analyzing data at the town and village level.
  • The national CHD registry offers comprehensive coverage suitable for nationwide epidemiological research.
  • Southwestern Saudi Arabia and the northern Eastern Province are identified as areas with a significant burden of congenital heart defects.
Abstract

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