cohort study

In a cohort study, large groups of people are followed for a long time.

However, the starting point of this study is the same as for all cohort studies.

A cohort study follows a large number of people over time.

These studies used the same matching criteria as the cohort study.

Only cohort studies for liver cancer are available, and they were not able to consider these possible risk factors.

The cohort study would show how the cervical cancer rates are different for the two groups over time.

No cohort study has conducted long-term follow up on the infants.

Four of these were cohort studies: all demonstrated a protective effect, with two being statistically significant.

Patients who have other major heart problems that require operations are currently not included in this Cohort study.

Epidemiologic data comes from three different cohort studies of carbon black production workers.

The search revealed 20 cohort studies that met our inclusion criteria.

Approximately 65% of the third year student cohort study abroad.

One or more case-control studies should be nested within the cohort study.

Another key benefit of retrospective cohort studies is that they typically require less time to complete.

Cohorts may be tracked over extended periods in a cohort study.

In cohort studies, the information is collected and studied after certain outcomes (such as cancer or death) have occurred.

Relative risk is used in randomized controlled trials and cohort studies.

Cohort studies have reached mixed conclusions about medical conditions associated with the menopause.

Household panel surveys are an important sub-type of cohort study.

A retrospective cohort study from 2008 found that disease management did not increase the use of drugs recommended for patients after a heart attack.

It noted that 1 Swedish cohort study has indicated such an effect, but with all studies taken together, the association was not statistically significant.

Several cohort studies suggest a preventive effect of aspirin.

In 2006, a large prospective cohort study of over 80,000 subjects failed to prove a definite association.

Cellular telephones and cancer: a nationwide cohort study in Denmark.

Cohort studies select subjects based on their exposure status.