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