Table 4. Association between scores in principle component 3 and risk factors adjusting for baseline age and refraction.
| Univariate regression† | Principle Component 3 |
|||
|---|---|---|---|---|
| Scores > 0 | p | Scores ≤ 0 | p | |
| Gender(female = 2) | 0.71 | 0.0015 | 0.25 | 0.2564 |
| Change of height (mm) | 0.03 | 0.0014 | 0.04 | 0.0013 |
| Change of weight (kg) | 0.04 | 0.0014 | 0.03 | 0.0095 |
| Outdoor time (hour) | −0.08 | 0.5435 | −0.33 | 0.0422 |
| Near work time (hour) | 0.04 | 0.6319 | 0.03 | 0.7540 |
| Paternal refraction (D) | 0.02 | 0.8003 | −0.05 | 0.3713 |
| Maternal refraction (D) | −0.02 | 0.6503 | −0.03 | 0.5582 |
| Two myopic parents | −0.51 | 0.4525 | −0.12 | 0.6969 |
D: diopter.
†Adjusting for baseline age and baseline refraction.