Convergent Validation of a Self-Reported Commuting to and from School Diary in Spanish Adolescents

Int J Environ Res Public Health. 2022 Dec 20;20(1):18. doi: 10.3390/ijerph20010018.

Abstract

The aim of this study was to examine the convergent validity of self-reported diary times for commuting to and from school with device-measured positional data (Global Positioning System; GPS) in Spanish adolescents.

Methods: Cross-sectional data were obtained from four Spanish public secondary schools in 2021, comprising 47 adolescents and 141 home-school and school-home trips. Participants self-reported the time they left and arrived at home and school through a commuting diary. They wore a GPS device recording the objective time during three trips (i.e., one home-school trip and two school-home trips). Agreement between commuting diary and GPS data regarding home-school trips and school-home trips was evaluated using Bland-Altman plots.

Results: Total commuting time differed by 1 min (95% limits of agreement were 16.1 min and -18.1 min) between subjective and objective measures (adolescents reported 0.8 more minutes in home-school trips and 1 more minute in school-home trips compared to objective data). Passive commuters reported 0.7 more minutes and active commuters reported 1.2 more minutes in the total commuting time compared to objective data.

Conclusions: Self-reported commuting diaries may be a useful tool to obtain commuting times of adolescents in epidemiological research or when tools to measure objective times are not feasible.

Keywords: active transport; commuting time; health behaviour; students.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Bicycling*
  • Cross-Sectional Studies
  • Humans
  • Schools
  • Self Report
  • Transportation
  • Walking*

Grants and funding

This study was supported by the Spanish Ministry of Economy, Industry and Competitiveness and the European Regional Development Fund (DEP2016-75598-R, MINECO/FEDER, UE), as well as the Spanish Ministry of Education and Vocational Training (FPU17/03934, FPU18/04251). Additionally, this study was partially funded by the University of Granada, Plan Propio de Investigación 2016, Excellence actions: Units of Excellence, Unit of Excellence on Exercise and Health (UCEES), and by the Junta de Andalucía, Consejería de Conocimiento, Investigación y Universidades, European Regional Development Fund (ERDF), ref. SOMM17/6107/UGR. V.S.-J. was funded by the Instituto de Salud Carlos III through the fellowship CP20/00178, co-funded by the European Social Fund. This study is part of a Ph.D. thesis conducted in the Official Doctoral Program in Biomedicine of the University of Granada, Spain.