Figure 1.

Yearly outdoor activity and screen use from 1 to 3 years of age. During the first 3 years after birth, the proportion of children who went outdoors for ≥7 times/week declined, from 67.4% at age 1 year to 62.1% at age 3 years, as did the proportion of children who spent ≥60 min outdoors, from 53.3% at age 1 year to 37.4% at age 3 years. In contrast, the proportion of children exposed to fixed screen devices increased from 17.7% at age 1 year to 55.3% at age 3 years, and the proportion of children exposed to handheld mobile devices went from 18.6% at age 1 year to 40.2% at age 3 years.