Research
Print page Print page
Switch language
The Capital Region of Denmark - a part of Copenhagen University Hospital
Published

An international prospective cohort study of mobile phone users and health (COSMOS): Factors affecting validity of self-reported mobile phone use

Research output: Contribution to journalJournal articleResearchpeer-review

  1. Cardiovascular disease and long-term occupational exposure to ultrafine particles: A cohort study of airport workers

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Urinary concentrations of benzophenone-type ultra violet light filters and reproductive parameters in young men

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. UV filters analyzed by isotope diluted TurboFlow-LC-MS/MS in urine from Danish children and adolescents

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Is the fact of parenting couples cohabitation affecting the serum levels of persistent organohalogen pollutants?

    Research output: Contribution to journalJournal articleResearchpeer-review

  1. Glioma risk associated with extent of estimated European genetic ancestry in African Americans and Hispanics

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Psychological stress in long-term testicular cancer survivors: a Danish nationwide cohort study

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. A Weighted Genetic Risk Score of Adult Glioma Susceptibility Loci Associated with Pediatric Brain Tumor Risk

    Research output: Contribution to journalJournal articleResearchpeer-review

  • Mireille B Toledano
  • Anssi Auvinen
  • Giorgio Tettamanti
  • Yang Cao
  • Maria Feychting
  • Anders Ahlbom
  • Karin Fremling
  • Sirpa Heinävaara
  • Katja Kojo
  • Gemma Knowles
  • Rachel B Smith
  • Joachim Schüz
  • Christoffer Johansen
  • Aslak Harbo Poulsen
  • Isabelle Deltour
  • Roel Vermeulen
  • Hans Kromhout
  • Paul Elliott
  • Lena Hillert
View graph of relations

This study investigates validity of self-reported mobile phone use in a subset of 75 993 adults from the COSMOS cohort study. Agreement between self-reported and operator-derived mobile call frequency and duration for a 3-month period was assessed using Cohen's weighted Kappa (κ). Sensitivity and specificity of both self-reported high (≥10 calls/day or ≥4h/week) and low (≤6 calls/week or <30min/week) mobile phone use were calculated, as compared to operator data. For users of one mobile phone, agreement was fair for call frequency (κ=0.35, 95% CI: 0.35, 0.36) and moderate for call duration (κ=0.50, 95% CI: 0.49, 0.50). Self-reported low call frequency and duration demonstrated high sensitivity (87% and 76% respectively), but for high call frequency and duration sensitivity was lower (38% and 56% respectively), reflecting a tendency for greater underestimation than overestimation. Validity of self-reported mobile phone use was lower in women, younger age groups and those reporting symptoms during/shortly after using a mobile phone. This study highlights the ongoing value of using self-report data to measure mobile phone use. Furthermore, compared to continuous scale estimates used by previous studies, categorical response options used in COSMOS appear to improve validity considerably, most likely by preventing unrealistically high estimates from being reported.

Original languageEnglish
JournalInternational Journal of Hygiene and Environmental Health
Volume221
Issue number1
Pages (from-to)1-8
Number of pages8
ISSN1438-4639
DOIs
Publication statusPublished - Jan 2018

    Research areas

  • Journal Article

ID: 52146319