Table 1. General characteristics of the study population (n = 3561).
| Total | Missing | ||
|---|---|---|---|
| N (%) | N (%) | ||
| Family characteristics | |||
| Maternal educational level | High | 1164 (33.8) | 116 (3.3) |
| Mid-high | 929 (27.0) | ||
| Mid-low | 911 (26.4) | ||
| Low | 441 (12.8) | ||
| Net household income | More than €3300/month | 1378 (50.0) | 805 (22.6) |
| €2000-3300/month | 1026 (37.2) | ||
| Less than €2000/month | 352 (12.8) | ||
| Single parenthood | Yes | 199 (5.8) | 159 (4.5) |
| No | 3203 (94.2) | ||
| Maternal age | Years (mean, SD) | 31.9 (4.4) | 0 |
| Siblings | Yes | 2670 (82.6) | 327 (9.2) |
| No | 564 (17.4) | ||
| Child characteristics | |||
| Child’s exact age | Age 2 years | 24.4 (1.1) | 658 (18.5) |
| Months (mean, SD) | Age 3 years | 36.5 (1.1) | 806 (22.6) |
| Age 4 years | 48.5 (1.0) | 728 (20.4) | |
| Age 6 years | 71.8 (4.8) | 262 (7.4) | |
| Age 9 years | 116.2 (3.4) | 613 (17.2) | |
| Gender | Girl | 1766 (49.6) | 0 |
| Boy | 1795 (50.4) | ||
| TV viewing time ≥1 hour/day | Age 2 years | 266 (10.0) | 913 (25.6) |
| Age 3 years | 704 (27.5) | 1004 (28.2) | |
| Age 4 years | 906 (32.4) | 764 (21.5) | |
| Age 6 years | 1652 (52.9) | 436 (12.2) | |
| Age 9 years | 1858 (69.8) | 900 (25.3) | |
| TV viewing time ≥2 hour/day | Age 2 years | 0 (0) | 913 (25.6) |
| Age 3 years | 100 (3.9) | 1004 (28.2) | |
| Age 4 years | 154 (5.5) | 764 (21.5) | |
| Age 6 years | 361 (11.6) | 436 (12.2) | |
| Age 9 years | 643 (24.2) | 900 (25.3) |
Table is based on non-imputed dataset.
Values are means (SD) for normally distributed continuous variables and frequencies (percentage) for categorical variables.