The DNBC is one of the world's largest birth cohorts with more than 180.000 participants.

The DNBC is one of the world's largest birth cohorts with more than 180.000 participants.

The researchers have collected data throughout the childrens' lives. Learn more about the specific data collections in the menu.

The researchers have collected data throughout the childrens' lives. Learn more about the specific data collections in the menu.

Data are made available as the collections are completed. Next up is our ongoing 18-year-old follow-up which will be available in 2022.

Data are made available as the collections are completed. Next up is our ongoing 18-year-old follow-up which will be available in 2022.

In 2018 the "children" of the DNBC are between 16-21 years old and new data collections are in the pipeline.

In 2018 the "children" of the DNBC are between 16-21 years old and new data collections are in the pipeline.

Data available

Since the completion of the initial 4 computer-assisted telephone interviews the DNCB has expanded the data collection with several data sweeps throughout offspring childhood and youth and also among mothers. 

In this section you will find information about DNBC questionnaires and data available.

Data available

You may ask for data from:

Miscarriage project

Interview 1-4

Food Frequency Questionnaire (FFQ)

7-year follow-up

11-year follow-up

Follow-up among mothers

Dietary Habits of 14-year olds

History of births

 

Enrollments and response rates

Data sweep Invited  Responders  Response rate   Codebook
Enrollments  101,042      
Interview 1       92,892  92%   Yes, DK and UK
Interview 2    87,802  87%   Yes, DK and UK
FFO        66,874  66%   pdf of questionnaire
Interview 3    70,292  69%   Yes, DK and UK
Interview 4    66,764  65%   Yes, DK and UK
7-year follow-up  91,256  57,282  63%   Yes, DK and UK
11-year follow-up  90,986  49,963  55%   Yes, DK and UK
Maternal Follow-up  78,010  43,641  55%   DK version only
14-year follow-up  78,651  36,599  47&  
Puberty follow-up (ongoing)   22,439  14,756  66%, as per Nov 2018  
18-year follow-up (ongoing)  43,265  21,767  50%, as per Nov 2018