Table 4.
Multivariate model of the risk factors for pterygium.
| Risk factors | ORadj (95% CI) | P-value |
|---|---|---|
| Age (years) | ||
| 50–59 | 1.0 | 0.000 |
| 60–69 | 1.425 (1.270–1.599) | |
| 70–79 | 1.610 (1.409–1.840) | |
| ≥80 | 1.466 (1.189–1.807) | |
| Areas | ||
| Rushan | 1.0 | 0.032 |
| Huaiyin | 1.078 (0.931–1.247) | |
| Tengzhou | 0.867 (0.759–0.989) | |
| Juancheng | 0.989 (0.857–1.141) | |
| Education (years) | ||
| Primary school and below | 1.0 | 0.005 |
| Junior school and above | 0.833 (0.733–0.945) | |
| Outdoor time (hours per day) | ||
| <4 | 1.0 | 0.000 |
| ≥4 | 1.328 (1.182–1.491) | |
| Wear sunglasses or hats | ||
| No | 1.0 | 0.000 |
| Yes | 0.107 (0.053–0.216) |