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A randomised placebo-controlled trial of the effect of hormone replacement therapy on dementia and cognitive function in post-menopausal women

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN55999335
Enrollment
14240
Registered
2000-10-25
Start date
2000-06-01
Completion date
Unknown
Last updated
2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obstetrics and gynaecology Urological and Genital Diseases Post-menopause

Interventions

Women who have had a hysterectomy and are not already taking HRT will be randomised to oestrogen only replacement therapy (ORT), progestogen and oestrogen replacement therapy (PORT) or placebo. Women

Sponsors

Medical Research Council (MRC) (UK)
Lead Sponsor

Eligibility

Sex/Gender
Female

Inclusion criteria

Inclusion criteria: Age 50-69, female, post-menopausal, no contraindication to HRT. For both components, in addition to the WISDOM trial inclusion criteria, subjects will only be recruited if they can be randomised to receive placebo, ie excluding the 21% of WISDOM recruits with a total hysterectomy who are already taking HRT. For the dementia component sub-study only those who will reach the age of 65 years before the end of the projected follow-up period (2009) will be included.

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

MeasureTime frame
Dementia component: The principal outcome will be onset of dementia according to ICD-10 criteria. Cognitive component: Change of cognitive test performance on the Wechsler Logical Memory Recall. The trial will have 90% power, at the 5% significance level, to detect an effect size, associated with randomisation to HRT, of 0.5 or greater enabling us to detect a difference of two story components recalled out of a total of 25 for Wechsler Logical Memory story recall. Added 19/08/09: Follow up duration for primary endpoints Dementia component - 2009 (10 years) Cognitive component - Five years

Secondary

MeasureTime frame
Dementia component: The secondary outcome will be onset of the dementia sub-type diagnosis of Alzheimer's disease (AD) diagnosed according to NINCDS-ADRDA criteria (possible and probable).

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026