Independent risk factors for CLMK identified by multiple logistic regression analysis
| Risk factor | OR | 95% CI | P value |
| Age | |||
| >55 | 1.00 (referent) | ||
| <24 | 1.78 | 0.28 to 11.26 | 0.541 |
| 25–39 | 8.16 | 1.45 to 46.05 | 0.017* |
| 40–54 | 7.78 | 1.31 to 46.28 | 0.024* |
| Contact lens type† | |||
| RGP | 1.00 (referent) | ||
| SDD | 16.76 | 1.09 to 257.56 | 0.043* |
| STWD | 26.07 | 1.17 to 577.16 | 0.039* |
| SMD | 10.33 | 0.72 to 148.27 | 0.086 |
| SEW | 1.58 | 0.04 to 71.50 | 0.813 |
| Frequency of showering in contact lenses | |||
| Never | 1.00 (referent) | ||
| Few times a year | 0.38 | 0.03 to 4.89 | 0.454 |
| Few times a month | 1.55 | 0.27 to 8.90 | 0.626 |
| Few times a week | 3.24 | 0.58 to 18.05 | 0.181 |
| Daily | 13.73 | 2.35 to 80.07 | 0.004** |
*p<0.05. **p<0.01.
†Two contact lens types unknown and excluded in this analysis.
RGP, rigid gas permeable; SDD, soft daily disposable; SEW, soft extended wear; SMD, soft monthly disposable; STWD, soft 2-week disposable.