Fig. 2.

Cumulative incidence of A and C, second primary CNS tumors and B and D, mortality among long-term survivors of CNS cancers by whether radiation was part of the primary treatment regimen. Groups were matched by age, sex, year of diagnosis, tumor location, histology, and receipt of chemotherapy using propensity score–based exact algorithms and stratified by age of initial diagnosis. Intervals reflect 95% confidence intervals of cumulative incidence functions. Abbreviations: CNS = central nervous system; RT, radiation therapy.