Welcome to the QBleed® + QStroke® combined calculator: http://qbleed.org/plus-qstroke

This website is intended for patients with atrial fibrillation who haven't already had a stroke.

About you
Age (25-84):
Sex: Male Female
Ethnicity:
UK postcode: leave blank if unknown
Postcode:
Clinical information
Smoking status:
Alcohol status:
Diabetes status:
Do you have...
a family history of angina or heart attack (i.e. in a 1st degree relative < 60)?
a diagnosis of heart attack or angina?
chronic kidney disease (stage 4 or 5)?
valvular heart disease?
heart failure?
high blood pressure needing medication?
rheumatoid arthritis?
a current or previous diagnosis of cancer?
chronic liver disease or chronic pancreatitis?
oesophageal varices?
a platelet count less than 150 or greater than 480? (both units x10^9/litre)
Have you had...
previous bleed (gastrointestinal, intracranial, haematuria, haemoptysis)?
venous thromboembolism?
Are you currently taking...
antiplatelet drugs (e.g. aspirin, clopidogrel or dipyramidole)?
non-steroidal anti-inflammatory pain killers (NSAIDs)?
regular steroid tablets?
antidepressants?
anticonvulsants (phenytoin or carbamezepine)?
Leave blank if unknown
Cholesterol/HDL ratio:
Systolic blood pressure (mmHg):
Body mass index
Height (cm):
Weight (kg):
Calculate risk over years.

Welcome to the QBleed® + QStroke® combined calculator

Welcome to the QBleed® + QStroke® combined calculator. You can use this calculator to work out your risk of having an ischaemic stroke or a serious bleed requiring hospital admission or causing death by answering some simple questions.

The QBleed® and QStroke® algorithms have been developed by Julia Hippisley-Cox and Carol Coupland and are based on routinely collected data from many thousands of GPs across the country who have freely contributed data to the QResearch database for medical research.

More detail on each score can be seen at each score's respective web site:


Copyright © 2014-19 ClinRisk Ltd. ALL RIGHTS RESERVED.

Materials on this web site are protected by copyright law. Access to the materials on this web site for the sole purpose of personal educational and research use only. Where appropriate a single print out of a reasonable proportion of these materials may be made for personal education, research and private study. Materials should not be further copied, photocopied or reproduced, or distributed in electronic form. Any unauthorised use or distribution for commercial purposes is expressly forbidden. Any other unauthorised use or distribution of the materials may constitute an infringement of ClinRisk Ltd.'s copyright and may lead to legal action.

For avoidance of doubt, any use of this site as a web service to obtain a QBleed® or QStroke® score for any purpose is expressly forbidden. Similarly, use of this website for developing or testing software of any sort is forbidden unless permission has been explicitly granted.

"QBleed" and "QStroke" are registered trademarks of ClinRisk Ltd.
BMI predictor algorithm © 2009-19 ClinRisk Ltd.
Website design © 2008-19 ClinRisk Ltd.