The Role of Alcohol Consumption in the Aetiology of Different Cardiovascular Disease Phenotypes: a CALIBER Study
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ClinicalTrials.gov Identifier: NCT01864031
Recruitment Status : Unknown
Verified May 2013 by Harry Hemingway, University College, London. Recruitment status was: Active, not recruiting
The association between alcohol consumption and cardiovascular disease (CVD) has mostly been examined using broad endpoints or cause-specific mortality. The purpose of our study is to compare the effect of alcohol consumption in the aetiology of a range of cardiovascular disease phenotypes.
Initial presentation of cardiovascular disease [ Time Frame: Study follow-up will commence on the earliest date that a patient fulfils the study inclusion criteria during the period between 1st January 1997 and 25th March 2010 (maximum of 13 years follow-up) ]
See "Conditions" and "Detailed Description" sections for further description of the endpoints used.
Secondary Outcome Measures :
Non-CVD mortality [ Time Frame: Same as for primary outcomes (maximum of 13 years follow-up) ]
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Layout table for eligibility information
Ages Eligible for Study:
30 Years and older (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
The cohort used in the present study was drawn from patients registered with GPRD general practices in England that consented to data linkage (approx. 5% of the UK population). We used an open cohort design, where participants joined the cohort when they met the inclusion criteria at any point between 1st January 1997 and 25th March 2010 (the last GPRD data submission). Patients were included in cohort if they were aged ≥ 30 years, had at least one year of electronic health record data which met GPRD data quality standards, and had no record indicating any cardiovascular disease prior to study entry. Patients were followed up until the date of an initial presentation of one of our cardiovascular endpoints or were censored on the date of leaving the practice/last data submission from their practice. Patients who died before 1st January 2001 were excluded as cause-specific mortality data was not available for them (this approach is adopted in the Prospective Studies Collaboration).
Aged ≥ 30 years.
Patient in a GPRD registered practice that has consented to the linkage process (who also met data quality standards).
A recorded history of any cardiovascular disease phenotype prior to entering the study.