TABLE 2

Trends in TV Exposure From 3 to 18 Months of Age

Visit
3 (n = 214)6 (n = 167)9 (n = 161)12 (n = 145)18 (n = 110)
Number of TV sets in household, mean ± SD3.0 ± 1.22.9 ± 1.1a2.9 ± 1.22.8 ± 1.32.8 ± 1.2
Households with TV in infant’s room, %14.015.616.926.2b28.6b
TV on most of the time or always, %48.846.148.545.650.5
TV on most of the time or always when infant is fed, %42.937.134.2b34.0b30.3b
Hours infant spends in front of TV per day, mean ± SD2.6 ± 3.13.0 ± 3.03.0 ± 2.92.8 ± 2.52.6 ± 2.4
Infants placed in device/seat limiting movement while in front of the TV, %96.161.5b28.7b26.9b34.3b
  • a Significantly different (P < .05) from 3-mo visit in longitudinal regression model testing for an effect of visit, controlling for repeated measures across subjects.

  • b Significantly different (P < .05) from 3-mo visit in longitudinal logistic model testing for an effect of visit, controlling for repeated measures across subjects.