What is the clinical evidence from this study?

Study design: Observational. Population: coronary heart disease. Intervention: Medical treatments and risk factor improvements vs. 2000 mortality rates. Primary outcome: Deaths prevented or postponed.

What does this research mean for the field?

Improved medical treatments and risk factor reductions accounted for 43% and 39%, respectively, of the decline in Scottish coronary heart disease mortality between 2000 and 2010, though adverse trends in obesity and diabetes offset some of these benefits. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To quantify the relative contributions of modern medical treatments and cardiovascular risk factor modifications to the decline in coronary heart disease mortality in Scotland between 2000 and 2010.

February 6, 2014BMJOpen Access

Explaining trends in Scottish coronary heart disease mortality between 2000 and 2010 using IMPACTSEC model: retrospective analysis using routine data

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Key result

Improved medical treatments and risk factor reductions accounted for 43% (95% CI 33-61%) and 39% (95% CI 28-49%) of the decline in Scottish coronary heart disease mortality between 2000 and 2010.

Why the study?

What are the contributions of prevention and treatment to the trends in mortality due to coronary heart disease in Scotland between 2000 and 2010?

Key Points

To quantify the relative contributions of modern medical treatments and cardiovascular risk factor modifications to the decline in coronary heart disease mortality in Scotland between 2000 and 2010.
Retrospective analysis applying the validated IMPACTSEC policy model to routine demographic and healthcare data across Scotland.
Analyzed all adults aged 25 years or older, stratified by age group, sex, and socioeconomic fifths of the Scottish Index of Multiple Deprivation.
Apportioned deaths prevented or postponed across more than 40 distinct treatments in nine patient groups and changes in major cardiovascular risk factors.
Coronary heart disease mortality rates fell 43% (from 262 to 148 deaths per 100,000), resulting in 5,770 fewer deaths in 2010 than expected under 2000 rates (8,042 observed vs. 13,813 expected).
Medical treatments accounted for approximately 43% (95% CI, 33% to 61%) of the mortality decline, driven by primary prevention for hypercholesterolaemia (13%), secondary prevention drugs (11%), and chronic angina therapies (7%).
Risk factor improvements accounted for approximately 39% (95% CI, 28% to 49%) of the mortality decline—predominantly driven by reductions in systolic blood pressure (37%)—though offset by adverse increases in obesity (+4%) and diabetes (+8%).

Study Design

Type

Observational

Structured PICO

What are the contributions of prevention and treatment to the trends in mortality due to coronary heart disease in Scotland between 2000 and 2010?

Population

All adults aged 25 years or over in Scotland, stratified by sex, age group, and fifths of Scottish Index of Multiple Deprivation.

Intervention

Changes in major cardiovascular risk factors and increases in more than 40 treatments in nine non-overlapping groups of patients

Comparator

Expected mortality if the 2000 mortality rates had persisted

Outcome

Deaths prevented or postponedhard clinical

Increases in medical treatments and population falls in blood pressure accounted for the majority of the decline in coronary heart disease mortality in Scotland between 2000 and 2010, though benefits were partially offset by rising obesity and diabetes.

Discussion

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Implication

Supports emphasis on treatments plus risk factor control for CHD mortality; extends prior models but remains observational and hypothesis-generating.

Cite This Study

Hotchkiss et al. (2014) conducted an observational in coronary heart disease. Medical treatments and risk factor improvements vs. 2000 mortality rates was evaluated on Deaths prevented or postponed. Improved medical treatments and risk factor reductions accounted for 43% (95% CI 33-61%) and 39% (95% CI 28-49%) of the decline in Scottish coronary heart disease mortality between 2000 and 2010.

synapsesocial.com/papers/6a1b0ae65ac37ececec2131b https://doi.org/10.1136/bmj.g1088

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Implication

Supports emphasis on treatments plus risk factor control for CHD mortality; extends prior models but remains observational and hypothesis-generating.

Explaining trends in Scottish coronary heart disease mortality between 2000 and 2010 using IMPACTSEC model: retrospective analysis using routine data

Key Points

Study Design

Structured PICO

Discussion

Implication

Cite This Study

Explaining trends in Scottish coronary heart disease mortality between 2000 and 2010 using IMPACTSEC model: retrospective analysis using routine data

Key Points

Study Design

Structured PICO

Discussion

Implication

Cite This Study

Also Consider

Also Consider