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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03743883
Other study ID # 20326
Secondary ID
Status Completed
Phase
First received
Last updated
Start date October 30, 2018
Est. completion date May 31, 2019

Study information

Verified date May 2020
Source Bayer
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Researchers already did studies in low-dose Aspirin for the prevention of heart and blood vessels disease and for the prevention of cancer of the colorectum. In this study, they want to learn whether an effect for the prevention of oesophagus cancer and stomach cancer goes along with the use of low-dose ASA on patients taking this medicine for the prevention of heart and blood vessels disease compared to non-use. To find this out electronic medical records stored in primary care database in the UK, The Health Improvement Network (THIN), will be used.


Recruitment information / eligibility

Status Completed
Enrollment 99999
Est. completion date May 31, 2019
Est. primary completion date April 15, 2019
Accepts healthy volunteers No
Gender All
Age group 40 Years to 89 Years
Eligibility Inclusion Criteria:

- Aged 40-89 years

- Enrolled with the PCP for at least 2 years

- To have a history of computerized prescriptions in THIN for at least 1 year prior to start date

Exclusion Criteria:

- To be exposed to low-dose ASA before entering in the study

- Having a diagnosis of any cancer before entering in the study

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Acetylsalicylic Acid(BAYE4465, Aspirin )
Administration according to clinical practice

Locations

Country Name City State
United Kingdom Many locations Multiple Locations

Sponsors (1)

Lead Sponsor Collaborator
Bayer

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary Incidence rates of oesophageal cancer and stomach cancer with use of low-dose ASA overall compared to non-use Diagnosis of cancer is routinely recorded by means of Read codes in THIN database Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Primary Incidence rates of oesophageal cancer and stomach cancer with use of low-dose ASA by age compared to non-use Age: 40-64 years, 65-74 years and 75 and more years. Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Primary Incidence rates of oesophageal cancer and stomach cancer with use of low-dose ASA by sex-specific compared to non-use Sex: Male, Female Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Secondary Incidence of oesophageal cancer and stomach cancer among new users of low-dose ASA Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Secondary Duration of low-dose ASA Duration of treatment will be calculated among current users. Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Secondary Dose-response of low-dose ASA The following daily doses will be ascertained: 75 mg, 150 mg and 300 mg. Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Secondary Number of case-fatality of oesophageal cancer and stomach cancer among new users of low-dose ASA Retrospective analysis between 1-Jan-2005 and 31-Dec-2017
Secondary Incidence of oesophageal cancer and stomach cancer among new users of low-dose ASA for primary or secondary cardiovascular prevention The primary and secondary cardiovascular prevention population of low-dose ASA users will be defined using a computer algorithm ascertaining any recorded Read code suggestive of cardiovascular disease (CVD). Retrospective analysis between 1-Jan-2005 and 31-Dec-2017