Table II.
Summary Statistics of Parental Reports
| Mean | SD | N | |
|---|---|---|---|
| Female | 0.487 | 0.500 | 5,936 |
| Age | 12.225 | 3.334 | 5,928 |
| Time use | |||
| Computer Use (hours per week) | 5.245 | 6.510 | 5,283 |
| Homework ≥ 1hr everyday | 0.661 | 0.473 | 5,483 |
| TV ≥ 1hr everyday | 0.746 | 0.436 | 5,498 |
| Reading ≥ 1hr everyday | 0.053 | 0.224 | 5,244 |
| Academic outcomes | |||
| Math GPA | 7.602 | 1.474 | 4,462 |
| Romanian GPA | 7.762 | 1.422 | 4,478 |
| English GPA | 7.822 | 1.501 | 3,536 |
| Behavior GPA | 9.931 | 0.388 | 4,835 |
| Non-cognitive outcomes | |||
| Behavior Problems Index (BPI) | 0.207 | 0.235 | 4,791 |
| BMI | 19.783 | 3.814 | 4,611 |
| Sports | 2.722 | 1.589 | 5,392 |
| Service | 1.845 | 0.997 | 5,457 |
Notes: SD is the standard deviation and N is the sample size. Child gender and age are reported by primary caregiver. Computer Use is measured in hours per week. Homework, TV, and Reading are indicator variables for daily activity of more than 1 hour per day. GPAs represent raw scores ranging from 1 to 10. BMI is the body-mass index calculated from reported height and weight of the child. BPI ranges from 0 to 1 with higher scores indicating more behavior problems associated with trouble getting along with teachers, disobedience at home, disobedience at school, hanging around with troublemakers, bullying others, inability to sit still, and whether the child prefers to be alone. Sports and Service are frequencies ranging from 1 to 5. Source: 2009 Euro 200 survey.