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Increased screen time is associated with poorer developmental outcomes in early childhood
  1. Isobel Fullwood
  1. Correspondence to Dr Isobel Fullwood, Birmingham Heartlands Hospital, Birmingham B4 6NH, UK; isobel.fullwood{at}

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Study question

Setting: Community-based study from Calgary, large urban area of Alberta, Canada.1

Patients: 2441 children of mothers recruited into the All Our Families study during pregnancy at <24 weeks gestation.

Exposure: The range of screen time, in hours, their child was exposed to at 24, 36 and 60 months was provided by the mothers for a weekday and a weekend day and a weighted weekly average was calculated as a single data point. Screen exposure included television, computers, gaming systems and other screen-based devices. Data collection period 20 October 2011 to 6 October 2016.

Outcomes: Maternally reported developmental progress at 24, 36 and 60 months, measured by the Ages and Stages Questionnaire (ASQ-3).

Analysis: The researchers used a tool called random intercepts cross lagged panel model, which …

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  • Contributors Article for re-abstracting selected by Ian Wacogne. Re-abstracting and commentary written by IF with guidance from Ian Wacogne.

  • Provenance and peer review Not commissioned; internally peer reviewed.

  • Patient consent for publication Not required.