Fig. 1
From: Children’s screen use and school readiness at 4-6 years: prospective cohort study
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12889-022-12629-8/MediaObjects/12889_2022_12629_Fig1_HTML.png)
Study participant flow chart. JK = junior kindergarten; SK = senior kindergarten. *Children in JK and SK recruited between 2013 and 2020, whereby 139 cases were collected during COVID-19 pandemic (March-November 2020)