TABLE 4 Predictors of loss to follow-up according to the Cox proportional hazards model
(1) Coverage of care was unsecured if the care was financed by the family, and secure if it was financed by a social solidarity system (mutual fund, social security fund, employer, etc.)
* There were 3 times more people lost to follow-up when care was paid for by the family than when it was financed by a social solidarity system; 3 times more lost to follow-up when the initial treatment was chemotherapy than when it was enucleation.
HR, hazards ratio; CI, confidence interval