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Table 2 The combination of ST duration and timing

From: Screen time duration and timing: effects on obesity, physical activity, dry eyes, and learning ability in elementary school children

Group

ST duration

ST timing

Above

3 h

1–3 h

Less than

1 h

Yes

No

G1

〇

  

〇

 

G2

〇

   

〇

G3

 

〇

 

〇

 

G4

 

〇

  

〇

G5

  

〇

〇

 

G6

  

〇

 

〇

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BMC Public Health

ISSN: 1471-2458

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