Authors
Abstract
Background and purpose:Retinoblastoma is one of the most common intraocular tumors. In survival analysis where some patients have not experienced the event of interest, we prefer to use cure models. Since many of patients among those diagnosed with retinoblastoma will not require enucleation surgery, these cases assumed to be cured. In order to investigate the factors affecting eye survival, mixture cure models were utilized in present study.
Methods & Materials: In this prospective study, we investigated and analyzed the eye survival of 170 pediatric patients suffering from retinoblastoma in Rasool-e-Akram Hospital during 2002 to 2007. Factors affecting eye survival were analyzed using a cure model with lognormal survival function and logit link function.
Results: There were statistically significant effects on eye survival for both tumor stage and chemotherapy in mixture cure model (P
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