Table 3.

Power for varying scenarios of sample size per zone, exposures for each zone and probabilities of symptoms for exposed and unexposed individuals.

Sample size/zone	Sample size total	Exposure/zone	Pr (sym|exposed) and Pr (sym|unexposed)
			0.3, 0.1	0.3, 0.05	0.25, 0.1	0.25, 0.05
60	300	1, 0.8, 0.5, 0.2, 0	0.80	0.97	0.62	0.91
		0.8, 0.7, 0.5, 0.2, 0	0.92	1.00	0.75	0.98
		0.7, 0.5, 0.3, 0.1, 0	0.91	1.00	0.73	0.97
		0.6, 0.5, 0.4, 0.3, 0	0.92	1.00	0.83	0.99
		0.6, 0.5, 0.4, 0.3, 0.2	0.99	1.00	0.88	1.00