Survival in infected nonhuman primates was dose-dependent , with survival rates of 0 % , 30 % , 59 % , 87 % , 100 % , and 100 % among monkeys treated with 0 mg , 3.75 mg , 7.5 mg , 15 mg , 20 mg , and 30 mg of AVI-7288 per kilogram , respectively ( P < 0.001 with the use of the log-rank test for the comparison of survival across groups ) .