Table 1.

Role of radiotherapy in glioblastoma.

Author	N	Schema	Results
Andersen (1978)	108	RT versus best supportive care	Post-op RT significantly improves survival compared to best supportive care
Walker et al. (1978)	303	BCNU versus RT versus BCNU+RT versus best supportive care	Patients receiving RT had longer MS than patients receiving BCNU or best supportive care
Walker et al. (1980)	467	Semustine versus RT versus semustine+RT versus BCNU+RT	Patients receiving RT had longer survival than patients receiving semustine alone
Kristiansen et al. (1981)	118	RT versus RT+bleomycin versus best supportive care	Median survival with RT alone 10.2 versus 5.2 months with best supportive care
Chang et al. (1983)	538	RT 60 Gy versus RT 70 Gy versus RT 60 Gy+BCNU versus RT 60 Gy+methyl-CCNU+dacarbazine	Dose escalation beyond 60 Gy or the addition of chemotherapy did not improve survival outcomes and BCNU did not improve overall or median survival