Significant correlates by ISCOLE country site for total sedentary time (SED) and screen time (ST).

aMulti-level general linear model controlling for sex, age, and highest parental education, with school as a random effect. (+) indicates a direct relationship between SED or ST and the associated correlate; (−) indicates an inverse relationship between SED or ST and the associated correlate. A blank cell indicates no significant association was found for the particular correlate in the respective country. PA: physical activity; SED: accelerometer measured sedentary time; ST: self-reported screen time; TV: television; U.K.: United Kingdom; U.S.: United States.Significant correlates by ISCOLE country site for total sedentary time (SED) and screen time (ST).