Table 3.
Univariable and multivariable logistic regression analyses of risk factors for astigmatism ≥ 0.75 D (N = 25,945)
| Characteristics | Astigmatism ≤-0.75 D (%) | Univariable logistic regression analysis | Multivariable logistic regression analysis | ||
|---|---|---|---|---|---|
| OR (95%CI) | P-Value | OR (95%CI) | P-Value | ||
| Age (year) | < 0.001 | < 0.001 | |||
| 7 | 2056 (30.4) | Reference | Reference | ||
| 8 | 2457 (32.2) | 1.089 (1.015–1.169) | 0.018 | 1.135 (1.056–1.221) | 0.001 |
| 9 | 2481 (32.3) | 1.092 (1.018–1.172) | 0.014 | 1.100 (1.023–1.182) | 0.01 |
| 10 | 2500 (32.7) | 1.112 (1.036–1.193) | 0.003 | 1.074 (0.999–1.155) | 0.053 |
| 11 | 2833 (33.9) | 1.172 (1.094–1.255) | < 0.001 | 1.067 (0.993–1.146) | 0.077 |
| 12 | 2889 (37.1) | 1.352 (1.261–1.449) | < 0.001 | 1.202 (1.118–1.293) | < 0.001 |
| 13 | 2350 (39.4) | 1.488 (1.382–1.601) | < 0.001 | 1.327 (1.228–1.434) | < 0.001 |
| 14 | 2198 (40.6) | 1.562 (1.449–1.683) | < 0.001 | 1.326 (1.224–1.437) | < 0.001 |
| 15 | 2029 (44.4) | 1.825 (1.688–1.973) | < 0.001 | 1.503 (1.383–1.634) | < 0.001 |
| 16 | 1456 (43.5) | 1.764 (1.619–1.922) | < 0.001 | 1.585 (1.446–1.738) | < 0.001 |
| 17 | 1421 (42.5) | 1.695 (1.555–1.847) | < 0.001 | 1.507 (1.374–1.653) | < 0.001 |
| 18 | 994 (40.3) | 1.544 (1.403–1.699) | < 0.001 | 1.534 (1.385–1.699) | < 0.001 |
| 19 | 474 (32.0) | 1.077 (0.926–1.253) | 0.335 | 1.208 (1.030–1.417) | 0.02 |
| Gender | < 0.001 | ||||
| Female | 12,101 (34.3) | Reference | Reference | ||
| Male | 13,844 (37.8) | 1.162 (1.128–1.198) | < 0.001 | 1.186 (1.150–1.224) | < 0.001 |
| Nationality | < 0.001 | ||||
| Han | 17,828 (39.6) | 1.829 (1.751–1.910) | < 0.001 | 1.611 (1.536–1.690) | < 0.001 |
| Uyghur | 3368 (26.4) | Reference | Reference | ||
| Kazakhs | 509 (34.0) | 1.440 (1.285–1.614) | < 0.001 | 1.415 (1.260–1.590) | < 0.001 |
| Hui | 1802 (34.0) | 1.438 (1.342–1.541) | < 0.001 | 1.332 (1.239–1.433) | < 0.001 |
| Kyrgyz | 1695 (32.1) | 1.320 (1.231–1.416) | < 0.001 | 1.271 (1.184–1.365) | < 0.001 |
| Others | 743 (37.4) | 1.670 (1.513–1.844) | < 0.001 | 1.564 (1.413–1.732) | < 0.001 |
| Spherical equivalent (right eye) | < 0.001 | < 0.001 | |||
| SE≤-6.00 D | 773 (76.5) | 8.216 (7.091–9.520) | < 0.001 | 6.391 (5.501–7.426) | < 0.001 |
| -6.00 D < SE≤-3.00 D | 4545 (57.1) | 3.359 (3.196–3.531) | < 0.001 | 2.695 (2.551–2.848) | < 0.001 |
| -3.00 D < SE<-0.50 D | 8634 (36.7) | 1.460 (1.410–1.512) | < 0.001 | 1.296 (1.248–1.346) | < 0.001 |
| -0.50 D ≤ SE ≤ + 0.50 D | 10,352 (28.4) | Reference | Reference | ||
| SE > + 0.50 D | 1641 (56.3) | 3.250 (3.010–3.509) | < 0.001 | 3.437 (3.180–3.716) | < 0.001 |
CI: confidence interval; OR: odds ratio