Table 3.
A longitudinal association between the time spent outdoors of students of different genders and myopia rate at follow-up (n = 3571).
| Model 1∗ | Model 2† | Model 3‡ | ||||
| Time spent outdoors hours/week | B | OR (95% CI) | B | OR (95% CI) | B | OR (95% CI) |
| Males | ||||||
| <7 | 0.114 | 1.121 (0.940–1.336) | 0.158 | 1.171 (0.953–1.439) | 0.168 | 1.183 (0.960–1.457) |
| 7–14 | −0.211 | 0.810 (0.665–0.986) | −0.100 | 0.904 (0.727–1.125) | −0.091 | 0.913 (0.732–1.139) |
| ≥14 | Reference | Reference | Reference | |||
| Females | ||||||
| <7 | 0.485 | 1.625 (1.334–1.979) | 0.306 | 1.358 (1.074–1.718) | 0.304 | 1.355 (1.067–1.720) |
| 7–14 | 0.170 | 1.185 (0.954–1.472) | 0.233 | 1.263 (0.986–1.618) | 0.227 | 1.255 (0.976–1.614) |
| ≥14 | Reference | Reference | Reference | |||
∗
unadjusted for any variables.
†
adjusted for students’ personal characteristics: whether the students were only-children, height, weight, time in meditation (hours/week), sleep duration (hours/day), self-reported health status, etc.
‡
adjusted for students’ personal characteristics: whether the students were only-children, height, weight, time in meditation (hours/week), sleep duration (hours/day), self-reported health status, etc.; students’ family characteristics: nationality, the type of area in which the family lived, whether they lived with their parents, family economic conditions, etc.