The Danish National Survey of Diet and Physical Activity 2021-2024

Completed

• Conditions: Diet Habit; Lifestyle; Nutritional and Metabolic Disease

• Registration Number: NCT04314882
• Lead Sponsor: Technical University of Denmark

Brief Summary

The Danish National Survey of Diet and Physical Activity (DANSDA) 2021-23 is a nationally representative, cross-sectional survey of dietary and physical activity habits of 4-80 year-old Danes, and is carried out at the National Food Institute, Technical University of Denmark (DTU Food). DANSDA provides high quality, nationally representative data on diet, physical activity, smoking, alcohol and weight status in Denmark.

Detailed Description

The principal objective of DANSDA is to monitor dietary intake and physical activity in a representative sample of the Danish population aged 4-80 years, and provide data for surveillance of the food and nutrient intake and physical activity of the general population.

The survey is a nationally representative cross-sectional survey, which includes face-to-face interviews, anthropometric measurements, blood pressure measurement, blood sampling, 7-day web-based food diaries, and pedometer-determined physical activity which is recorded in 7-day web-based step diaries. In the interview socio-demographic details as well as lifestyle and health attitudes are recorded. Web-based food and step diaries are collected in the entire survey population of 4000 individuals, blood pressure is measured in 15-80 year-olds, and biological samples (blood) are collected in a subpopulation of approximately 1000 individuals aged 40-70 years. Biomarker of metabolic health are measured in a blood sample drawn after an overnight fast. The blood-based biomarkers (cholesterol, triglycerides, glucose), anthropometric data and blood pressure measurements are used to assess the prevalence of the metabolic syndrome (WHO definition) in 40-70 year-old Danes. Surplus blood samples are stored in a biobank for 30 years.

The data from the survey provide the evidence base to support work by the authorities to facilitate the adoption of healthier eating and physical activity behavior and reduce lifestyle-related diseases. Another objective is to provide detailed data on food consumption at the individual level, which enables food chemical exposure assessment and forms an essential part of food safety risk assessment. Furthermore, the data will be used to assess the environmental impact of the diet.

Study Timeline

• Study First Submitted: 2020-02-27
• Study First Submitted QC: 2020-03-16
• Study First Posted: 2020-03-19
• Study Start: 2021-09-01
• Status Verified: 2023-07
• Primary Completion: 2024-07-31
• Study Completion: 2024-07-31
• Last Update Submitted: 2025-04-29
• Last Update Posted: 2025-05-02

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 4224

Inclusion Criteria

• Danish Citizen
• 4-80 years old
• Sufficient Danish language proficiency

Exclusion Criteria

• Care home resident

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Dietary intake	Baseline	Dietary intake is assessed by a 7-day web-based food diary.

Secondary Outcome Measures

Name	Time	Method
Waist circumference	Baseline	Waist circumference, measured in cm
Fasting glucose	Baseline	Fasting glucose concentration in plasma, measured in mmol/l among 40-70-year-olds
HDL cholesterol	Baseline	Plasma HDL concentration, measured in mmol/l among 40-70-year-olds
Physical activity	Baseline	Physical activity is assessed by pedometer recordings over 7 days, measured as daily steps
Blood pressure	Baseline	Average of three blood pressure measurements (systolic and diastolic blood pressure) using a validated blood pressure monitor, measured in mmHg. Measured among 15-80-year-olds.
Body mass index	Baseline	Weight and height will be combined to report BMI in kg/m\^2
Triglyceride	Baseline	Plasma triglyceride concentration, measured in mmol/l among 40-70-year-olds
Total cholesterol	Baseline	Plasma total cholesterol concentration, measured in mmol/l among 40-70-year-olds
Intakes of rare food products	Baseline	Supplementary food frequency questionnaire (FFQ) focusing on foods consumed occasionally
Metabolic syndrome score	Baseline	Waist circumference, blood pressure, HDL cholesterol, triglycerides and fasting glucose will be combined to report metabolic syndrome score among 40-70-year-olds.
Socio-demographic background information through personal interview	Baseline	Personal interview about socio-demographic background, lifestyle and health attitudes

Trial Locations

Locations (1)

Technical University of Denmark; 🇩🇰 Copenhagen, Kgs Lyngby, Denmark