question: Compared to melphalan and prednisone what was the result of 100 mg thalidomide daily in addition to standard doses of melphalan and prednisone on  progression-free survival and overall survival?
context:  Patients allocated to receive thalidomide also received that drug as maintenance therapy. The trial failed to detect a difference in overall survival (hr: 0.68; 95% ci: 0.38 to 1.22; p = 0.19), but the trial design did not have statistical power sufficient to address that outcome measure