Final model of logistic regression analysis by using stepwise backward elimination for significant sociodemographic characteristics and perceived barriers to the referral
| OR (95% CI) | P value | |
| Sociodemographic characteristics | ||
| Age | 1.13 (1.04 to 1.24) | 0.007 |
| Education level | 0.77 (0.68 to 0.87) | <0.001 |
| Perceived barriers | ||
| Too old to want any more treatment | 2.38 (1.88 to 3.01) | <0.001 |
| Difficulty in getting time to referral | 2.15 (1.76 to 2.61) | <0.001 |
| No serious illness needs treatment at present | 2.07 (1.75 to 2.44) | <0.001 |
| My eyes are okay | 1.85 (1.57 to 2.18) | <0.001 |
| Distrust the recommended hospital | 1.55 (1.15 to 2.08) | 0.004 |
| Mobility or transportation difficulties | 1.22 (1.03 to 1.44) | 0.021 |
| Have been diagnosed or treated before telescreening | 0.54 (0.46 to 0.64) | <0.001 |