Table 5. Model estimates of the mean and 95% confidence limits for probability of death in each treatment and for the effect of exposure.

Stage	Days	Treatment	Estimated probability of death			Estimated effect
			mean	lower limit	upper limit	mean	upper limit
1	5	100 m	0.47	0.42	0.52	−4%	11%
		200 m	0.46	0.41	0.51	−6%	9%
		control	0.49	0.44	0.54
1	7	100 m	0.54	0.49	0.59	−3%	13%
		200 m	0.54	0.49	0.59	−3%	14%
		control	0.55	0.50	0.61
2	5	100 m	0.17	0.13	0.23	0%	10%
		200 m	0.20	0.15	0.26	4%	14%
		control	0.17	0.13	0.22
2	7	100 m	0.22	0.17	0.27	1%	10%
		200 m	0.24	0.19	0.30	4%	14%
		control	0.21	0.17	0.26
3–4a	5	100 m	0.25	0.20	0.30	0%	10%
		200 m	0.26	0.21	0.31	1%	11%
		control	0.25	0.21	0.30
3–4a	7	100 m	0.30	0.25	0.35	−2%	8%
		200 m	0.31	0.26	0.36	0%	10%
		control	0.31	0.26	0.36

The effect of exposure was defined as 100% • (p_e−p_c)/(1−p_c), in which p_e is the estimated mean probability of death in the exposure group and p_c is the estimated mean probability of death in the control group. The labels of the sound exposure treatments refer to the distance from the pile, the associated sound levels are presented in Table 3.