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. 2013 Jan 31;2013(1):CD004816. doi: 10.1002/14651858.CD004816.pub5

ASPEN 2006.

Study characteristics
Methods Randomised trial.
Participants 2410 participants with type 2 diabetes based in 16 developed countries with mean age 60; 62.5% men; 84% Caucasian. < 10% with clinical evidence of CVD.
Interventions 10 mg atorvastatin versus placebo; follow‐up of 2.4 years (for primary prevention participants).
Outcomes Primary: composite of fatal MI, stroke, sudden cardiac death, heart failure, CVD death. Single outcomes included: non‐fatal or silent MI + stroke, revascularisation, resuscitated cardiac arrest, TIA, unstable angina, peripheral arterial disease, Ischaemic heart failure and adverse events.
Notes Primary prevention participants recruited 2‐3 years into the study.
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Not described
Allocation concealment (selection bias) Unclear risk Not described
Blinding (performance bias and detection bias)
All outcomes Low risk Double‐blind: participants and outcome assessors
Incomplete outcome data (attrition bias)
All outcomes Low risk ITT used 22% drop‐outs reported
Selective reporting (reporting bias) Low risk Other than not providing results on adverse events for primary prevention group
Other bias Unclear risk Funded by pharmaceutical industry