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 ± SD | 3.0 ± 1.2 | 2.9 ± 1.1a | 2.9 ± 1.2 | 2.8 ± 1.3 | 2.8 ± 1.2 |
| Households with TV in infant’s room, % | 14.0 | 15.6 | 16.9 | 26.2b | 28.6b |
| TV on most of the time or always, % | 48.8 | 46.1 | 48.5 | 45.6 | 50.5 |
| TV on most of the time or always when infant is fed, % | 42.9 | 37.1 | 34.2b | 34.0b | 30.3b |
| Hours infant spends in front of TV per day, mean ± SD | 2.6 ± 3.1 | 3.0 ± 3.0 | 3.0 ± 2.9 | 2.8 ± 2.5 | 2.6 ± 2.4 |
| Infants placed in device/seat limiting movement while in front of the TV, % | 96.1 | 61.5b | 28.7b | 26.9b | 34.3b |
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.