Unblinding for India

Participants in the Add-Aspirin trial take either 100mg aspirin, 300mg aspirin or a matched placebo, once daily for approximately five years. Add-Aspirin is a double-blind trial. This means that neither the participant nor their doctors will know which treatment they have received.

Almost all clinical scenarios can be managed by assuming a trial participant is taking 300mg of aspirin once a day and withholding the trial medication. We only expect unblinding in the Add-Aspirin trial to be necessary in rare clinical circumstances where knowledge of treatment allocation is essential to guide clinical management.
Guidance on a number of anticipated scenarios with specific advice about the need to unblind can be found here.

If unblinding is felt to be clinically essential for a participant in India, designated individuals at Tata Memorial Centre Mumbai (TMC) and JSS are able to find out a participant’s treatment allocation through the unblinding system. Where unblinding is being considered, contact should be made with  the JSS team in the first instance and – where appropriate - they will contact the clinical leads at TMC to discuss the case.

To contact JSS
Dr Neeraj Prasad: +(91)9930740633; +(91)1296613500  (24/7)

Designated individuals at TMC and JSS can directly access treatment information in an emergency using the link below, and entering their email address in addition to the participant’s trial number and date of birth. The participant’s trial number can be found on their Add-Aspirin trial card. Unblinding details will be sent to the email address provided.


Contact Details

If you are an individual who is interested in taking part in Add-Aspirin, please talk to your doctor who will be able to consider whether you are suitable for the trial.

For healthcare professionals

Please log into the members area for Add-Aspirin contact details.

Register Interest

For healthcare professionals

If your centre would like to recruit participants to Add-Aspirin, contact us:

Register a participant

From Monday 16th March 2020, to RANDOMISE a participant in the UK please call +44 (0)20 7670 4925, rather than the usual randomisation line.

To RANDOMISE a participant from Republic of Ireland or India only, please use the 'Register a participant' link above to randomise online. Please make sure to press 'Randomise' once logged in to the server.

We have been experiencing intermittent issues with the trial websites. In the event of an emergency unblinding outside of office hours (including over the Easter bank holidays), if the usual unblinding links are not working, please telephone +(0)20 7670 4906 or +(0)20 7670 4892 to reach one of the Trial Managers.

Unblind a participant in the UK

Unblind a participant in the RoI

Unblind a participant in India