The Danish National Cohort Study (DANCOS)

Area of Science:

• Public Health Research
• Epidemiology
• Health Services Research

Background:

• The Danish National Cohort Study (DANCOS) is a nationally representative public health survey.
• It links repeated Danish Health Interview surveys (1986-2005) with national health and welfare registers.
• DANCOS enables analysis of self-reported health behaviors, healthcare utilization, and non-response bias.

Purpose of the Study:

• To demonstrate the research potential of the DANCOS dataset.
• To highlight the impact of modifiable risk factors on public health.
• To analyze non-response bias and the epidemiology of chronic pain and osteoarthritis.

Main Methods:

• Utilizing linked data from Danish Health Interview surveys and national health registers.
• Analyzing self-reported health behaviors and healthcare utilization.
• Investigating non-response bias in a large cohort study.

Main Results:

• Smoking is linked to 24% of all deaths and the highest number of years of life lost.
• Non-respondents exhibit higher mortality, but healthcare estimates show no significant bias.
• Individuals with chronic pain have more primary healthcare contacts (12.8/year) than those without (7.3/year).
• An estimated 22,600 incident cases of osteoarthritis are projected for 2020.

Conclusions:

• DANCOS offers extensive research possibilities due to its linked register data.
• The study aims to stimulate further research using the DANCOS dataset.
• Findings underscore the public health impact of modifiable risk factors like smoking.