Table 5.

Sample size estimates

		3 days		3.5 days		4 days
Power	CAC	Cluster Size	N	Cluster Size	N	Cluster Size	N
90%	0.8	10	2160	6	1296	4	864
85%	0.8	8	1728	5	1080	3	648
80%	0.8	6	1296	4	864	3	648
90%	0.7	14	3024	7	1512	5	1080
85%	0.7	10	2160	6	1296	4	864
80%	0.7	8	1728	5	1080	3	648
90%	0.6	26	5616	9	1944	5	1080
85%	0.6	14	3024	6	1296	4	864
80%	0.6	10	2160	5	1080	3	648

CAC cluster autocorrelation coefficient