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[Mortality due to congenital malformations in Chile (1969-1997)]
P Bedregal1, C Orfali, E Norero
1Departamento de Salud Pública, P. Universidad Católica de Chile. pbedrega@med.puc.cl
Insights
Mortality from congenital malformations in Chile decreased between 1969 and 1997, but their relative importance grew. Chromosomal and osteomuscular defects posed increasing risks, particularly for males and infants under one year.
Area of Science:
- Public Health
- Pediatrics
- Genetics
Context:
- Congenital malformations are birth defects affecting structure, metabolism, or function.
- Understanding mortality patterns is crucial for public health interventions.
Purpose:
- To analyze mortality trends of congenital malformations in Chile from 1969 to 1997.
- To investigate variations by malformation type, individual factors, time, and geography.
Summary:
- Mortality rates for congenital malformations showed a declining trend, yet their significance increased over the study period.
- Increased risk was observed for chromosomal and osteomuscular malformations, with higher mortality in males and infants under one year.
- Regional disparities in risk were noted, particularly in urban areas and specific regions, with circulatory, central nervous system, and chromosomal defects being leading causes of death.
Impact:
- Identifies specific populations and regions with elevated risks, guiding targeted public health strategies.
- Highlights the need for further research into regional variations and specific congenital malformation types.
- Provides valuable data for policy-making aimed at reducing congenital malformation-related mortality.
Background:
Congenital malformations are defined as those structural, metabolic or functional defects found at birth.
Aim:
To study the mortality due to congenital malformations in Chile between 1969 and 1997, their type, individual, temporal and geographic variations.
Material And Methods:
A descriptive analysis of deaths registered by the National Statistics Institute and the Ministry of Health. Means, frequencies, raw and adjusted rates were calculated and inferences for some variables were carried out.
Results:
Between 1969 and 1997 ther was tendency towards a reduction in rates of mortality due to congenital malformations and an increment in their relative importance. During the period, the risk for chromosome (98%) and osteomuscular (67%) malformations increased. Men and children of less than one year had the higher risk. In 1995, 1167 deaths due to congenital malformations were registered, 90% in children of less than 5 years. Higher risks occurred in urban zones (with a rate of 8.25 per 100,000) in the third region (rate 11.59) and second region (rate 11.2). Most deaths occurred in hospitals (85%). Main causes of death were circulatory system, central nervous system and chromosome malformations.
Conclusions:
The differences in regional deaths due to congenital malformations suggests specific risks that deserve further study.