Table 3.
Logistic regression results of ADHD symptoms among preschool children
| Group | Total OR (95%CI) |
Subgroup analysis | ||
|---|---|---|---|---|
| Boys OR (95%CI) |
Girls OR (95%CI) |
|||
| Screen time > 1 h | ||||
| Weekdays | 1.826 (1.032, 3.232) | 1.723 (0.861, 3.448) | 2.270 (0.814, 6.332) | |
| Weekend | 1.086 (0.635, 1.858) | 0.951 (0.505, 1.789) | 1.504 (0.537, 4.210) | |
| Children age (years) | 0.701 (0.495, 0.992) | 0.786 (0.520, 1.188) | 0.522 (0.265, 1.030) | |
| Gender | ||||
| Boys | Ref. | — | — | |
| Girls | 0.494 (0.301, 0.812) | — | — | |
| Age at pregnancy (years) | 0.990 (0.926, 1.058) | 0.986 (0.910, 1.068) | 1.004 (0.890, 1.134) | |
| Premature | ||||
| Non-premature | Ref. | Ref. | Ref. | |
| Premature delivery | 1.023 (0.361, 2.896) | 0.659 (0.155, 2.802) | 2.112 (0.435, 10.263) | |
| Paternal education levels | ||||
| Junior high school and below | Ref. | Ref. | Ref. | |
| Senior high school | 2.009 (0.503, 8.016) | 1.564 (0.316, 7.730) | 2.429 (0.176, 33.602) | |
| College degree and above | 1.312 (0.345, 4.991) | 0.729 (0.147, 3.609) | 2.303 (0.205, 25.849) | |
| Unknown | 1.352 (0.384, 4.761) | 1.037 (0.244, 4.406) | 1.639 (0.147, 18.291) | |
| Maternal education levels | ||||
| Junior high school and below | Ref. | Ref. | Ref. | |
| Senior high school | 0.691 (0.275, 1.733) | 1.030 (0.322, 3.291) | 0.339 (0.069, 1.674) | |
| College degree and above | 0.608 (0.248, 1.487) | 0.840 (0.268, 2.629) | 0.295 (0.067, 1.300) | |
| Unknown | 1.087 (0.275, 4.299) | 0.739 (0.115, 4.744) | 1.657 (0.231, 11.895) | |
| Number of children in family | ||||
| One | Ref. | Ref. | Ref. | |
| Two and more | 0.875 (0.540, 1.416) | 1.166 (0.657, 2.066) | 0.437 (0.173, 1.100) | |
| Overweight or obesity | ||||
| No | Ref. | Ref. | Ref. | |
| Yes | 1.287 (0.782, 2.119) | 1.481 (0.838, 2.617) | 0.817 (0.264, 2.524) | |
Note: Some numbers in bold meant that the statistical significance of OR existed