Table 2.
Estimates from a linear regression model examining the amount of self-reported exposure to screen-based media (in minutes) on a weekday among adolescents in six countries (n=9171)
| Parameter | Weekday screen time | |
| Wald χ2 | B (CI) | |
| Country | 64.2* | |
| AUS vs CAN | −18.1 (−47.2 to 11.0) | |
| AUS vs CHILE | −170.2 (−205.8 to −134.5) | |
| AUS vs MEX | −144.3 (−179.3 to −109.3) | |
| AUS vs UK | −26.8 (−60.7 to 7.2) | |
| AUS vs USA | −107.8 (−142.6, to −72.9) | |
| CAN vs CHILE | −152.1 (−181.9 to −122.3) | |
| CAN vs MEX | −126.2 (−154.9 to −97.5) | |
| CAN vs UK | −8.7 (−37.7 to 20.3) | |
| CAN vs USA | −89.7 (−118.2 to −61.1) | |
| CHILE vs MEX | 25.8 (−9.1 to 60.8) | |
| CHILE vs UK | 143.4 (107.9 to178.9) | |
| CHILE vs USA | 62.4 (26.7 to 98.0) | |
| MEX vs UK | 117.6 (82.7 to 152.4) | |
| MEX vs USA | 36.5 (1.9 to 71.2) | |
| UK vs USA | −81.0 (−116.1 to −45.9) | |
| Sex | 25.3* | |
| Female vs male | −34.7 (−52.4 to −16.9) | |
| Age | 209.4* | |
| 10–13 years vs 14–17 years | −99.7 (−117.4 to −81.9) | |
| Ethnicity | 18.5* | |
| Majority vs minority | −38.9 (−62.2 to −15.6) | |
| Perceived income adequacy | 16.0* | |
| Adequate vs inadequate | −33.0 (−54.3 to −11.8) | |
| School grades | 19.9* | |
| High vs low | −64.0 (−90.7 to −37.2) | |
| High vs mid | −26.6 (−46.2 to −7.0) | |
| Low vs mid | 37.4 (10.6 to 64.1) | |
| BMI | 16.9* | |
| Not reported vs obesity | −67.5 (−102.2 to −32.8) | |
| Not reported vs overweight | −28.8 (−57.2 to −0.3) | |
| Not reported vs severe thinness/thinness/normal weight | 12.4 (−10.3 to 35.1) | |
| Obesity vs overweight | 38.7 (2.5 to 74.9) | |
| Obesity vs severe thinness/thinness/normal weight | 79.9 (47.8 to 112.0) | |
| Overweight vs severe thinness/thinness/normal weight | 41.2 (16.4 to 65.9) | |
The variable listed second is the reference variable.
*Indicates significant Wald χ2 test (p<0.01).
AUS, Australia; B, Beta; BMI, body mass index; CAN, Canada; CI, 99% confidence interval; MEX, Mexico; UK, United Kingdom; USA, United States of America.