We found high quality evidence that hormone therapy in both primary and secondary prevention conferred no protective effects for all-cause mortality , cardiovascular death , non-fatal myocardial infa rct ion , angina , or revascularisation .
There was no strong evidence of effect on risk of stroke in this group .
Our review findings provide strong evidence that treatment with hormone therapy in post-menopausal women overall , for either primary or secondary prevention of cardiovascular disease events has little if any benefit and causes an increase in the risk of stroke and venous thromboembolic events
BACKGROUND Evidence from systematic review s of observational studies suggests that hormone therapy may have beneficial effects in reducing the incidence of cardiovascular disease events in post-menopausal women , however the results of r and omised controlled trials ( RCTs ) have had mixed results .
This is an up date d version of a Cochrane review published in 2013 .
OBJECTIVES To assess the effects of hormone therapy for the prevention of cardiovascular disease in post-menopausal women , and whether there are differential effects between use in primary or secondary prevention .
Secondary aims were to undertake exploratory analyses to ( i ) assess the impact of time since menopause that treatment was commenced ( ≥ 10 years versus < 10 years ) , and where these data were not available , use age of trial participants at baseline as a proxy ( ≥ 60 years of age versus < 60 years of age ) ; and ( ii ) assess the effects of length of time on treatment .
Main morbidities recorded in the women's international study of long duration oestrogen after menopause (WISDOM): a randomised controlled trial of hormone replacement therapy in postmenopausal women
Objective To assess the long term risks and benefits of hormone replacement therapy ( combined hormone therapy versus placebo , and oestrogen alone versus combined hormone therapy ) . Design Multicentre , r and omised , placebo controlled , double blind trial . Setting General practice s in UK ( 384 ) , Australia ( 91 ) , and New Zeal and ( 24 ) . Participants Postmenopausal women aged 50 - 69 years at r and omisation . At early closure of the trial , 56 583 had been screened , 8980 entered run-in , and 5692 ( 26 % of target of 22 300 ) started treatment . Interventions Oestrogen only therapy ( conjugated equine oestrogens 0.625 mg orally daily ) or combined hormone therapy ( conjugated equine oestrogens plus medroxyprogesterone acetate 2.5/5.0 mg orally daily ) . Ten years of treatment planned . Main outcome measures Primary outcomes : major cardiovascular disease , osteoporotic fractures , and breast cancer . Secondary outcomes : other cancers , death from all causes , venous thromboembolism , cerebrovascular disease , dementia , and quality of life . Results The trial was prematurely closed during recruitment , after a median follow-up of 11.9 months ( interquartile range 7.1 - 19.6 , total 6498 women years ) in those enrolled , after the publication of early results from the women 's health initiative study . The mean age of r and omised women was 62.8 ( SD 4.8 ) years . When combined hormone therapy ( n=2196 ) was compared with placebo ( n=2189 ) , there was a significant increase in the number of major cardiovascular events ( 7 v 0 , P=0.016 ) and venous thromboembolisms ( 22 v 3 , hazard ratio 7.36 ( 95 % CI 2.20 to 24.60 ) ) . There were no statistically significant differences in numbers of breast or other cancers ( 22 v 25 , hazard ratio 0.88 ( 0.49 to 1.56 ) ) , cerebrovascular events ( 14 v 19 , 0.73 ( 0.37 to 1.46 ) ) , fractures ( 40 v 58 , 0.69 ( 0.46 to 1.03 ) ) , and overall deaths ( 8 v 5 , 1.60 ( 0.52 to 4.89 ) ) . Comparison of combined hormone therapy ( n=815 ) versus oestrogen therapy ( n=826 ) outcomes revealed no significant differences . Conclusions Hormone replacement therapy increases cardiovascular and thromboembolic risk when started many years after the menopause . The results are consistent with the findings of the women 's health initiative study and secondary prevention studies . Research is needed to assess the long term risks and benefits of starting hormone replacement therapy near the menopause , when the effect may be different . Trial registration Current Controlled Trials IS RCT N
We found high quality evidence that hormone therapy in both primary and secondary prevention conferred no protective effects for all-cause mortality , cardiovascular death , non-fatal myocardial infa rct ion , angina , or revascularisation .
There was no strong evidence of effect on risk of stroke in this group .
Our review findings provide strong evidence that treatment with hormone therapy in post-menopausal women overall , for either primary or secondary prevention of cardiovascular disease events has little if any benefit and causes an increase in the risk of stroke and venous thromboembolic events
BACKGROUND Evidence from systematic review s of observational studies suggests that hormone therapy may have beneficial effects in reducing the incidence of cardiovascular disease events in post-menopausal women , however the results of r and omised controlled trials ( RCTs ) have had mixed results .
This is an up date d version of a Cochrane review published in 2013 .
OBJECTIVES To assess the effects of hormone therapy for the prevention of cardiovascular disease in post-menopausal women , and whether there are differential effects between use in primary or secondary prevention .
Secondary aims were to undertake exploratory analyses to ( i ) assess the impact of time since menopause that treatment was commenced ( ≥ 10 years versus < 10 years ) , and where these data were not available , use age of trial participants at baseline as a proxy ( ≥ 60 years of age versus < 60 years of age ) ; and ( ii ) assess the effects of length of time on treatment .