• Comparing the sociodemographic characteristics of participants and non-participants in the population-based Tromsø Study 

      Vo, Chi Quynh; Samuelsen, Per-Jostein; Sommerseth, Hilde Leikny; Wisløff, Torbjørn; Wilsgaard, Tom; Eggen, Anne Elise (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-29)
      Background Diferences in the sociodemographic characteristics of participants and non-participants in populationbased studies may introduce bias and reduce the generalizability of research fndings. This study aimed to compare the sociodemographic characteristics of participants and non-participants of the seventh survey of the Tromsø Study (Tromsø7, 2015–16), a population-based health survey.<p> ...
    • Educational inequality in population-based health studies 

      Vo, Chi Quynh (Doctoral thesis; Doktorgradsavhandling, 2024-04-04)
      When comparing groups in the society, one can observed systematic differences in health. The higher the education the group has, the higher the proportion of the group’s member have good health. These differences are known as social inequality in health. Information concerning an individual’s socioeconomic status is often collected through self-administrated questionnaires within epidemiological ...
    • Validity of self-reported educational level in the Tromsø Study 

      Vo, Chi Quynh; Samuelsen, Per-Jostein; Sommerseth, Hilde Leikny; Wisløff, Torbjørn; Wilsgaard, Tom; Eggen, Anne Elise (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-20)
      Background: Self-reported data on educational level have been collected for decades in the Tromsø Study, but their validity has yet to be established. Aim: To investigate the completeness and correctness of self-reported educational level in the Tromsø Study, using data from Statistics Norway. In addition, we explored the consequence of using these two data sources on educational trends in ...