Related Experiment Videos
The falling mortality from coronary heart disease: a clinicopathological perspective. The United Kingdom Heart Attack
Insights
Official coronary heart disease mortality estimates differ from clinicopathological diagnoses, particularly in older adults. This study highlights discrepancies in death certification accuracy for coronary events.
Area of Science:
- Cardiovascular epidemiology
- Public health surveillance
Background:
- Official mortality statistics rely on death certification, which may not always reflect precise causes of death.
- Accurate coronary heart disease (CHD) mortality data is crucial for public health planning and intervention.
Purpose of the Study:
- To compare CHD mortality estimates derived from clinicopathological diagnoses with official figures.
- To assess changes in CHD mortality trends over time.
Main Methods:
- A prospective community study conducted in Brighton, South Glamorgan, and York between 1994-1995.
- Comparison of 1589 deaths from acute coronary events (under 75 years) with certified coronary deaths in the same age group.
- Analysis involved comparing death certificate causes with study criteria and contrasting current mortality rates with historical data.
Main Results:
- Age-specific CHD mortality aligned with official estimates up to age 65.
- A 20% shortfall in study deaths was observed for ages 65-74 compared to official figures.
- Deaths from CHD in individuals under 65 occurred approximately 10 years later in the 1990s compared to the 1970s.
Conclusions:
- Significant discrepancies exist between clinicopathologically defined CHD mortality and official rates, especially in the elderly.
- Official coronary mortality rates may overestimate deaths in older individuals due to unconfirmed diagnoses on death certificates.
- Understanding these differences is vital for refining future epidemiological studies on coronary heart disease.
Objective:
(1) To compare mortality estimates based on clinicopathological diagnoses of death from acute coronary heart disease with official estimates of coronary heart disease mortality; (2) to compare present day mortality figures with those from earlier reports.
Design:
Prospective community study over the two years 1994 and 1995.
Setting:
The health districts of Brighton, South Glamorgan, and York.
Subjects:
1589 men and women under 75 years of age who, based on our study criteria, died from acute coronary events were compared with certified cases of coronary death in the same age group.
Main Outcome Measures:
(1) Comparison of the underlying cause recorded on death certificates with the diagnosis of acute coronary death defined by our study criteria; (2) comparison of age specific mortality figures of the present with earlier studies.
Results:
Up to age 65, age specific mortality for coronary heart disease, using study criteria, was similar to official estimates. However, at ages 65-74 years there was a shortfall in study deaths of about 20% compared with official figures. One reason for this was that many death certificates in elderly people attributed death to coronary disease in the absence of confirmatory evidence. Despite this, deaths in the under 65 age group in the 1990s appear to be occurring in people who are about 10 years older than was the case during the 1970s.
Conclusions:
There are differences, most noticeable in elderly subjects, between estimates of coronary mortality made according to strict clinical and pathological definitions and official rates based on death certification. Recognition of these differences will be important for future epidemiological studies.