However, cohort studies
done outside of Asian population has not shown an association.
Three large, prospective, longitudinal cohort studies
have been published since the meta-analysis.
Furthermore, several new prospective cohort studies
on this topic had been published recently, and the results of these new cohort studies
are inconsistent too.24,25 Therefore, it is necessary to perform an update meta-analysis to quantitatively summarize the association between coffee consumption and pancreatic cancer risk.
Biased exposure-health effect estimates from selection cohort studies
: are environmental studies at particular risk?
Another major area in which cohort studies
provide material for economists is the study of gender issues in the labour market, represented here by the paper by Dex and Bukodi on women's occupational histories3 After an outline of the contributors' results, the reader will find more information about the history, content and future of the studies.
Two controlled prospective cohort studies
to verify these promising retrospective data have been started in colorectal and pancreatic cancer in Germany, Austria and Switzerland.
However, the data suggest a negative association in cohort studies
, show no association for stroke caused by bleeding in the brain or for stroke-related deaths, and indicate no elevation in risk for ever-users.
The ACSR contains over 100,000 specimens collected from cohort studies
, clinical trials, and other research sources (including international research).
Etminan and his associates searched the published literature since 1966 and identified six cohort studies
and three case-control studies of NSAIDs and Alzheimer's disease, and five cohort studies
and three case-control studies of aspirin and Alzheimer's disease.
The best studies of the alleged link are called historical cohort studies
because they rely on complete medical records for entire populations of women, over decades.
To better understand what helps people stay healthy, scientists do cohort studies
. A cohort is simply a group of people who are alike in some way--such as having HIV infection.
Because the true incidence of meningococcal infection among coinfected patients is unknown, future cohort studies
will have to establish the impact of coinfection with HIV and HCV on the risk for meningococcal infection.