Discrepancies between self-reported and objectively measured smartphone screen time: before and during lockdown

HIGHLIGHTS

• who: Pedro B. Ju00fadice from the Study Design and Sample Recruitment The study comprised of two cross-sectional groups with , Portuguese adults from two cohortsThis study included a convenience sample of university students, teachers, and relatives, recruited through social networking and snowball effect. Participants were recruited if they were aged between , and , years old, owned a smartphone encompassing an app to objectively measure SST and had no other constraints. Cohort , (n=65) was evaluated between January and February of , (i.e., prior to the first , lockdown in Portugal), and the second cohort (n=146) was assessed between . . .
  

   

  

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