Table 5.

Thirty day probit estimate for studies 1 and 2 combined.

		LD30/30	LD50/30	LD70/30
All animals	Estimated dose (Gy)	12.85	13.40	13.98
	95% CI for dose	12.70 to 12.99	13.17 to 13.64	13.61 to 14.35
	95% CI for % mortality	0.253 to 0.351	0.414 to 0.586	0.577 to 0.804
Male	Estimated dose (Gy)	13.95	15.04	16.22
	95% CI for dose	13.02 to 14.88	13.45 to 16.63	13.84 to 18.60
	95% CI for % mortality	0.162 to 0.475	0.231 to 0.769	0.310 to 0.939
Female	Estimated dose (Gy)	12.53	12.90	13.28
	95% CI for dose	12.67 to 13.38	12.75 to 13.04	13.07 to 13.49
	95% CI for % mortality	0.233 to 0.375	0.420 to 0.580	0.594 to 0.791

CI, confidence interval.

LD_x/x is defined as the lethal dose to X% of the population at X days; i.e., the LD_30/30 is the estimated radiation dose to result in 30% mortality at 30 days.