The University of Southampton
University of Southampton Institutional Repository

Aspirin in Alzheimer's disease (AD2000): a randomised open label trial

Raftery, J., Bentham, P, Gray, R, Hills, R, Crome, P and Sellwood, E AD2000 Collaborative Group (2008) Aspirin in Alzheimer's disease (AD2000): a randomised open label trial Lancet Neurology, 7, (1), pp. 41-49. (doi:10.1016/S1474-4422(07)70293-4). (PMID:18068522).

Record type: Article


Background: Cardiovascular risk factors and a history of vascular disease can increase the risk of Alzheimer's disease (AD). AD is less common in aspirin users than non-users, and there are plausible biological mechanisms whereby aspirin might slow the progression of either vascular or Alzheimer-type pathology. We assessed the benefits of aspirin in patients with AD.

Methods: 310 community-resident patients who had AD and who had no potential indication or definite contraindication for aspirin were randomly assigned to receive open-label aspirin (n=156; one 75-mg enteric-coated tablet per day, to continue indefinitely) or to avoid aspirin (n=154). Primary outcome measures were cognition (assessed with the mini-mental state examination [MMSE]) and functional ability (assessed with the Bristol activities of daily living scale [BADLS]). Secondary outcomes were time to formal domiciliary or institutional care, progress of disability, behavioural symptoms, caregiver wellbeing, and care time. Patients were assessed at 12-week intervals in the first year and once each year thereafter. Analysis of the primary outcome measures was by intention to treat. This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN96337233.

Findings: Patients had a median age of 75 years; 156 patients had mild AD, 154 had moderate AD, and 18 had concomitant vascular dementia. Over the 3 years after randomisation, in patients who took aspirin, mean MMSE score was 0·10 points higher (95% CI ?0·37 to 0·57; p=0·7) and mean BADLS score was 0·62 points lower (?1·37 to 0·13; p=0·11) than in patients assigned to aspirin avoidance. There were no obvious differences between the groups in any other outcome measurements. 13 (8%) patients on aspirin and two (1%) patients in the control group had bleeds that led to admission to hospital (relative risk=4·4, 95% CI 1·5–12·8; p=0·007); three (2%) patients in the aspirin group had fatal cerebral bleeds.

Interpretation: Although aspirin is commonly used in dementia, in patients with typical AD 2 years of treatment with low-dose aspirin has no worthwhile benefit and increases the risk of serious bleeds.

Full text not available from this repository.

More information

e-pub ahead of print date: 17 December 2007
Published date: 7 January 2008
Additional Information: Professor Raftery is part of the AD2000 Collaborative Group
Organisations: Community Clinical Sciences


Local EPrints ID: 183689
ISSN: 1474-4422
PURE UUID: 62d9a04f-0983-4b7a-95ff-3ffa3db0bcd8

Catalogue record

Date deposited: 04 May 2011 08:23
Last modified: 18 Jul 2017 11:55

Export record



Author: J. Raftery
Author: P Bentham
Author: R Gray
Author: R Hills
Author: P Crome
Author: E Sellwood

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.