IJE Advance Access published online on August 27, 2007
International Journal of Epidemiology, doi:10.1093/ije/dym165
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Published by Oxford University Press on behalf of the International Epidemiological Association © The Author 2007; all rights reserved.
Cohort profile: The Adventist Health Study-2 (AHS-2)
1 School of Public Health, Loma Linda University, Loma Linda, California, USA.
2 School of Medicine, University of Southern California, Los Angeles, California, USA.
* Corresponding author. School of Public Health, Loma Linda University, 24785 Stewart Street, Room 203, Loma Linda, California 9235, USA. E-mail: tbutler@llu.edu
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How did the study come about? |
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The Adventist Health Study-2 (AHS-2) began in 2002 with the goal of investigating the role of selected foods to change the risk of cancer. AHS-2 is designed to provide more precise and comprehensive results than previous pioneering research among Seventh-day Adventists1–6, a unique health oriented population with diverse dietary habits.
The Adventist church, of 24 million adherents world-wide, promotes a healthy lifestyle. Church members are expected to be non-smokers and non-alcohol users, and are encouraged to eat a vegetarian diet. Many also avoid caffeine-containing beverages. However, adherence to these recommendations is quite variable.
Adventists in North America are almost entirely a non-smoking population. The vast majority are non-drinkers and the small number who consume alcohol do so infrequently. But they have a wide diversity in dietary practices. Two previous longitudinal studies in California showed a small percentage are total vegetarians, many follow a lacto-ovo-vegetarian diet or eat meat less
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What does it cover? |
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Who is in the sample? |
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Enrolment methods |
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How often will study subjects be followed-up? |
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Morbidity and mortality follow-up
Tumour registry matching
Hospital history form
Clinics in churches
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What has been measured? |
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Main questionnaire
Calibration study
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What is the rate of loss likely to be? |
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What has AHS-2 found? |
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What are the main strengths and weaknesses? |
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Where can I find out more and what is the potential for collaboration? |
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Supplementary data |
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