نبذة مختصرة : Background: Screen-viewing time has been associated with adverse health outcomes. Data on the predictors of youth screen-viewing time is predominately from older children in North America. Parental and home media environment factors that are associated with screen-viewing time could be targeted in interventions. Purpose: Examine if parental screen-viewing time and electronic media (access to game equipment, TVs, PCs, and laptops) environment factors were associated with Portuguese children’s screen-viewing time and if associations differed by child age (< 7 vs ≥ 7 years); gender; or type of screen viewing. Methods: Data are reported for 2965 families with children aged 3–10 years. Data were collected in 2009–2010 and analyzed in 2011. Outcomes were child spending ≥ 2 hours watching TV and ≥ 1 hour per day playing with combined other media. Exposures were mothers and fathers watching ≥ 2 hours of TV and electronic media variables. Results: Parental TV-viewing time was strongly associated with child weekday and weekend TV-viewing time across all four gender and age subgroups. Maternal TV-viewing time was a stronger predictor of child TV-viewing time than paternal TV-viewing time. There was very limited evidence that parental TV-viewing time was associated with combined other media time among boys or girls. Access to electronic game equipment increased the likelihood that children spent > 1 hour using combined other media on weekdays and weekend days. Conclusions: Parental TV-viewing time was associated with Portuguese children’s TV-viewing time. The numbers of TVs in the household and electronic games equipment access were also associated with TV- and combined other media-viewing/usage time.
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