April 25, 2005Canadian Medical Association JournalOpen Access

Effectiveness of statins for secondary prevention in elderly patients after acute myocardial infarction: an evaluation of class effect

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Why the study?

Do different statins (pravastatin, simvastatin, lovastatin, fluvastatin) have similar effectiveness compared to atorvastatin in preventing recurrent AMI or death in elderly patients after acute myocardial infarction?

Structured PICO

Population

18,637 patients aged 65 years and over who were discharged alive after their first acute myocardial infarction (AMI)-related hospital stay. Key inclusion: began statin treatment within 90 days after discharge.

Intervention

Pravastatin (n=4,480), simvastatin (n=5,518), lovastatin (n=1,736), or fluvastatin (n=483) prescribed within 90 days after discharge for secondary prevention.

Comparator

Atorvastatin (n=6,420) prescribed within 90 days after discharge, used as the active reference comparator.

Outcome

Combined outcome of recurrent AMI or death from any causecomposite

In elderly patients following an acute myocardial infarction, different statins demonstrate equivalent effectiveness in reducing the risk of recurrent AMI or death when used in routine clinical practice.

Limitations

Retrospective analysis of administrative databases with potential unmeasured confounding
Missing clinical data such as cholesterol levels and location of MI
Patients started statin treatment at different points after discharge and may have experienced changes in use over time
Statins were used at low doses, limiting the ability to compare statins at their upper dose limits
Follow-up period was shorter than in large-scale RCTs
Prescription claims were used as a proxy for actual statin use
Relatively low number of patients prescribed lovastatin and fluvastatin

Authors

ZZZheng ZhouNorth Sichuan Medical University

Discussion

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Implication

Supports equivalent statin effectiveness in routine elderly post-AMI care; leaves open randomized confirmation of interchangeability.

Cite This Study

Zheng Zhou (2005) studied this question.

synapsesocial.com/papers/6a6fe4a35671bbf00bc29dd2 https://doi.org/10.1503/cmaj.1041403

Topics

Statin therapy PCSK9 inhibitors

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Effectiveness of statins for secondary prevention in elderly patients after acute myocardial infarction: an evaluation of class effect

Structured PICO

Limitations

Discussion

Implication

Cite This Study

Topics

Effectiveness of statins for secondary prevention in elderly patients after acute myocardial infarction: an evaluation of class effect

Structured PICO

Limitations

Discussion

Implication

Cite This Study

Also Consider

Topics

Also Consider