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Related Concept Videos

Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
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Bias01:22

Bias

Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
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Exercise and Muscle Performance

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Endurance exercises
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Systematic Error: Methodological and Sampling Errors01:15

Systematic Error: Methodological and Sampling Errors

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Nuclear Magnetic Resonance (NMR): Overview

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Related Experiment Video

Updated: Jun 9, 2026

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
06:52

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

Published on: May 26, 2020

The Norwegian Sports Membership Database: Coverage, biases and potential.

Fredrik Methi1,2, Ingeborg Hess Elgersma1,2, Jonas Minet Kinge1,2

  • 1Norwegian Institute of Public Health, Norway.

Scandinavian Journal of Public Health
|June 8, 2026
PubMed
Summary
This summary is machine-generated.

The Norwegian Sports Membership Database (NSMD) offers high coverage for sports participation research from 2019. Linking this sports data with health outcomes enables valuable population-based health studies.

Keywords:
Norwaydatabasehealthphysical activitypopulation-wideregistrysocio-economysport

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Area of Science:

  • Sports Science
  • Public Health
  • Data Science

Background:

  • The Norwegian Sports Membership Database (NSMD) captures individual-level sports participation data.
  • Understanding the completeness and utility of such databases is crucial for research.
  • Previous research has highlighted the need for comprehensive sports participation datasets.

Purpose of the Study:

  • To describe the Norwegian Sports Membership Database (NSMD).
  • To assess the coverage and completeness of the NSMD.
  • To define criteria for active sports memberships within the database.

Main Methods:

  • Validated the NSMD coverage by comparing its yearly membership counts with official reports from the Norwegian Olympic and Paralympic Committee and Confederation of Sports (NIF).
  • Defined active memberships as those lasting at least one season or requiring a paid license.
  • Analyzed data for individuals aged 10-70 years between 2015 and 2024.

Main Results:

  • The NSMD contains over 3.1 million memberships, with 60% classified as active.
  • Data covers 1.6 million unique individuals across 55 sports federations.
  • Football, handball, and gymnastics are the most popular sports.
  • Database coverage improved significantly, exceeding 85% of all and 92% of active memberships in 2023 for ages 13-19.

Conclusions:

  • The NSMD demonstrates high coverage in recent years, suitable for population-level analyses from 2019 onwards.
  • Significant variations in coverage exist across different sports.
  • Integrating NSMD data with health and socio-demographic information offers a powerful tool for lifespan research on sports participation and health.