Total cholesterol and LDL cholesterol were reduced in all trials but there was evidence of heterogeneity of effects .
There was no evidence of any serious harm caused by statin prescription .
Evidence available to date showed that primary prevention with statins is likely to be cost-effective and may improve patient quality of life .
Recent findings from the Cholesterol Treatment Trialists study using individual patient data meta- analysis indicate that these benefits are similar in people at lower ( < 1 % per year ) risk of a major cardiovascular event .
AUTHORS ' CONCLUSIONS Reductions in all-cause mortality , major vascular events and revascularisations were found with no excess of adverse events among people without evidence of CVD treated with statins
BACKGROUND Reducing high blood cholesterol , a risk factor for cardiovascular disease ( CVD ) events in people with and without a past history of CVD is an important goal of pharmacotherapy .
Statins are the first-choice agents .
Previous review s of the effects of statins have highlighted their benefits in people with CVD .
The case for primary prevention was uncertain when the last version of this review was published ( 2011 ) and in light of new data an up date of this review is required .
OBJECTIVES To assess the effects , both harms and benefits , of statins in people with no history of CVD .
Primary prevention of cardiovascular disease with atorvastatin in type 2 diabetes in the Collaborative Atorvastatin Diabetes Study (CARDS): multicentre randomised placebo-controlled trial
BACKGROUND Type 2 diabetes is associated with a substantially increased risk of cardiovascular disease , but the role of lipid-lowering therapy with statins for the primary prevention of cardiovascular disease in diabetes is inadequately defined . We aim ed to assess the effectiveness of atorvastatin 10 mg daily for primary prevention of major cardiovascular events in patients with type 2 diabetes without high concentrations of LDL-cholesterol . METHODS 2838 patients aged 40 - 75 years in 132 centres in the UK and Irel and were r and omised to placebo  ( n=1410 ) or atorvastatin 10 mg daily ( n=1428 ) . Study entrants had no documented previous history of cardiovascular disease , an LDL-cholesterol concentration of 4.14 mmol/L or lower , a fasting triglyceride amount of 6.78 mmol/L or less , and at least one of the following : retinopathy , albuminuria , current smoking , or hypertension . The primary endpoint was time to first occurrence of the following : acute coronary heart disease events , coronary revascularisation , or stroke . Analysis was by intention to treat . FINDINGS The trial was terminated 2 years earlier than expected because the prespecified early stopping rule for efficacy had been met . Median duration of follow-up was 3.9 years ( IQR 3.0 - 4.7 ) . 127 patients allocated placebo ( 2.46 per 100 person-years at risk ) and 83 allocated atorvastatin ( 1.54 per 100 person-years at risk ) had at least one major cardiovascular event ( rate reduction 37 % [ 95 % CI -52 to -17 ] , p=0.001 ) . Treatment would be expected to prevent at least 37 major vascular events per 1000 such people treated for 4 years . Assessed separately , acute coronary heart disease events were reduced by 36 % ( -55 to -9 ) , coronary revascularisations by 31 % ( -59 to 16 ) , and rate of stroke by 48 % ( -69 to -11 ) . Atorvastatin reduced the death rate by 27 % ( -48 to 1 , p=0.059 ) . No excess of adverse events was noted in the atorvastatin group . INTERPRETATION Atorvastatin 10 mg daily is safe and efficacious in reducing the risk of first cardiovascular disease events , including stroke , in patients with type 2 diabetes without high LDL-cholesterol . No justification is available for having a particular threshold level of LDL-cholesterol as the sole arbiter of which patients with type 2 diabetes should receive statins . The debate about whether all people with this disorder warrant statin treatment should now focus on whether any patients are at sufficiently low risk for this treatment to be withheld
Total cholesterol and LDL cholesterol were reduced in all trials but there was evidence of heterogeneity of effects .
There was no evidence of any serious harm caused by statin prescription .
Evidence available to date showed that primary prevention with statins is likely to be cost-effective and may improve patient quality of life .
Recent findings from the Cholesterol Treatment Trialists study using individual patient data meta- analysis indicate that these benefits are similar in people at lower ( < 1 % per year ) risk of a major cardiovascular event .
AUTHORS ' CONCLUSIONS Reductions in all-cause mortality , major vascular events and revascularisations were found with no excess of adverse events among people without evidence of CVD treated with statins
BACKGROUND Reducing high blood cholesterol , a risk factor for cardiovascular disease ( CVD ) events in people with and without a past history of CVD is an important goal of pharmacotherapy .
Statins are the first-choice agents .
Previous review s of the effects of statins have highlighted their benefits in people with CVD .
The case for primary prevention was uncertain when the last version of this review was published ( 2011 ) and in light of new data an up date of this review is required .
OBJECTIVES To assess the effects , both harms and benefits , of statins in people with no history of CVD .